MFS SERIES TRUST I
497, 1998-12-01
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<PAGE>

                        MFS(R) CASH RESERVE FUND
      MFS/FOREIGN & COLONIAL INTERNATIONAL GROWTH AND INCOME FUND
                        MFS(R) TOTAL RETURN FUND
               MASSACHUSETTS INVESTORS GROWTH STOCK FUND
           MFS/FOREIGN & COLONIAL INTERNATIONAL GROWTH FUND
                    MFS(R) GROWTH OPPORTUNITIES FUND
                       MFS(R) EMERGING GROWTH FUND
                   MFS(R) ALABAMA MUNICIPAL BOND FUND
                       MFS(R) CAPITAL GROWTH FUND
                   MFS(R) ARKANSAS MUNICIPAL BOND FUND
                     MFS(R) INTERMEDIATE INCOME FUND
                  MFS(R) CALIFORNIA MUNICIPAL BOND FUND
                     MASSACHUSETTS INVESTORS TRUST
                   MFS(R) FLORIDA MUNICIPAL BOND FUND
                       MFS(R) MANAGED SECTORS FUND
                   MFS(R) GEORGIA MUNICIPAL BOND FUND
                            MFS(R) VALUE FUND
                   MFS(R) MARYLAND MUNICIPAL BOND FUND
                          MFS(R) UTILITIES FUND
                MFS(R) MASSACHUSETTS MUNICIPAL BOND FUND
                        MFS(R) WORLD EQUITY FUND
                 MFS(R) MISSISSIPPI MUNICIPAL BOND FUND
                     MFS(R) WORLD TOTAL RETURN FUND
                   MFS(R) NEW YORK MUNICIPAL BOND FUND
                            MFS(R) BOND FUND
                MFS(R) NORTH CAROLINA MUNICIPAL BOND FUND
                      MFS(R) LIMITED MATURITY FUND
                 MFS(R) PENNSYLVANIA MUNICIPAL BOND FUND
                     MFS(R) GOVERNMENT MORTGAGE FUND
                MFS(R) SOUTH CAROLINA MUNICIPAL BOND FUND
                 MFS(R) GOVERNMENT LIMITED MATURITY FUND
                  MFS(R) TENNESSEE MUNICIPAL BOND FUND
                    MFS(R) GOVERNMENT SECURITIES FUND
                   MFS(R) VIRGINIA MUNICIPAL BOND FUND
                         MFS(R) HIGH INCOME FUND
                MFS(R) WEST VIRGINIA MUNICIPAL BOND FUND
                      MFS(R) STRATEGIC INCOME FUND
                 MFS(R) MUNICIPAL LIMITED MATURITY FUND
                      MFS(R) WORLD GOVERNMENTS FUND
                       MFS(R) MUNICIPAL BOND FUND
                        MFS(R) WORLD GROWTH FUND
                      MFS(R) MUNICIPAL INCOME FUND
                             MFS(R) OTC FUND
                          MFS(R) RESEARCH FUND
          MFS/FOREIGN & COLONIAL EMERGING MARKETS EQUITY FUND
                   MFS(R) WORLD ASSET ALLOCATION FUND
                        MFS(R) MONEY MARKET FUND
                    MFS(R) MUNICIPAL HIGH INCOME FUND
                   MFS(R) GOVERNMENT MONEY MARKET FUND
                 MFS(R) RESEARCH GROWTH AND INCOME FUND
                      MFS(R) STRATEGIC GROWTH FUND

                 Supplement to the Current Prospectus

The following  provisions  shall apply to any  retirement  plan (each a "Merrill
Lynch Daily K Plan") whose records are maintained on a daily  valuation basis by
either Merrill Lynch, Pierce, Fenner & Smith Incorporated  ("Merrill Lynch"), or
by an independent  recordkeeper (an "Independent  Recordkeeper")  whose services
are provided through a contract or alliance  arrangement with Merrill Lynch, and
with respect to which the sponsor of such plan has entered into a  recordkeeping
service   agreement   with  Merrill  Lynch  (a  "Merrill   Lynch   Recordkeeping
Agreement").

The initial  sales  charge  imposed on purchases of Class A shares of the Funds,
and the contingent deferred sales charge ("CDSC") imposed on certain redemptions
of Class A shares of the Funds,  is waived in the following  circumstances  with
respect to a Merrill Lynch Daily K Plan:

         (i)      if, on the date the Plan  sponsor  signs the  Merrill
                  Lynch  Recordkeeping  Agreement,  such  Plan  has  $3
                  million or more in assets  invested in  broker-dealer
                  sold funds not  advised  or managed by Merrill  Lynch
                  Asset   Management   L.P.   ("MLAM")  that  are  made
                  available  pursuant  to  agreements  between  Merrill
                  Lynch  and  such  funds'  principal  underwriters  or
                  distributors,  and in funds  advised  or  managed  by
                  MLAM  (collectively,  the "Applicable  Investments");
                  or

         (ii)     if  such  Plan's  records  are  maintained  by an  Independent
                  Recordkeeper  and,  on the  date the Plan  sponsor  signs  the
                  Merrill  Lynch  Recordkeeping  Agreement,  such  Plan  has  $3
                  million  or more in  assets,  excluding  money  market  funds,
                  invested in Applicable Investments; or

         (iii)    such Plan has 500 or more eligible employees, as determined by
                  the Merrill Lynch plan conversion manager on the date the Plan
                  sponsor signs the Merrill Lynch Recordkeeping Agreement.
<PAGE>

         The CDSC imposed on redemptions of Class B shares of the Fund is waived
         in the following  circumstances with respect to a Merrill Lynch Daily K
         Plan:

         (i)      if,  on the date the Plan  sponsor  signs  the  Merrill  Lynch
                  Recordkeeping Agreement, such Plan has less than $3 million in
                  assets invested in Applicable
                  Investments;

         (ii)     if  such  Plan's  records  are  maintained  by an  independent
                  recordkeeper  and,  on the  date the Plan  sponsor  signs  the
                  Merrill Lynch Recordkeeping Agreement, such Plan has less than
                  $3 million  dollars in assets,  excluding  money market funds,
                  invested in Applicable Investments; or

         (iii)    such Plan has fewer than 500 eligible employees, as determined
                  by the Merrill Lynch plan  conversion  manager on the date the
                  Plan sponsor signs the Merrill Lynch Recordkeeping Agreement.

No front-end  commissions are paid with respect to any Class A or Class B shares
of the Fund purchased by any Merrill Lynch Daily K Plan.

             The date of this Supplement is June 5, 1997.



<PAGE>
                       MFS(R) Managed Sectors Fund
                        MFS(R) World Growth Fund
                        MFS(R) Cash Reserve Fund
                            MFS(R) Bond Fund
                   MFS(R) World Asset Allocation Fund
                      MFS(R) Limited Maturity Fund
                         MFS(R) Core Growth Fund
                 MFS(R) Municipal Limited Maturity Fund
                    MFS(R) Special Opportunities Fund
                     MFS(R) Government Mortgage Fund
                   MFS(R) Convertible Securities Fund
                    MFS(R) International Growth Fund
                          MFS(R) Blue Chip Fund
               MFS(R) International Growth and Income Fund
                   MFS(R) Science and Technology Fund
          MFS/Foreign & Colonial Emerging Markets Equity Fund
                        MFS(R) New Discovery Fund
                   MFS(R) Alabama Municipal Bond Fund
                 MFS(R) Research Growth and Income Fund
                   MFS(R) Arkansas Municipal Bond Fund
                        MFS(R) Equity Income Fund
                  MFS(R) California Municipal Bond Fund
                   MFS(R) Research International Fund
                   MFS(R) Florida Municipal Bond Fund
                      MFS(R) Strategic Growth Fund
                   MFS(R) Georgia Municipal Bond Fund
                       MFS(R) Emerging Growth Fund
                   MFS(R) Maryland Municipal Bond Fund
                      MFS(R) Large Cap Growth Fund
                MFS(R) Massachusetts Municipal Bond Fund
                     MFS(R) Intermediate Income Fund
                 MFS(R) Mississippi Municipal Bond Fund
                         MFS(R) High Income Fund
                   MFS(R) New York Municipal Bond Fund
                    MFS(R) Municipal High Income Fund
                MFS(R) North Carolina Municipal Bond Fund
                        MFS(R) Money Market Fund
                 MFS(R) Pennsylvania Municipal Bond Fund
                   MFS(R) Government Money Market Fund
                MFS(R) South Carolina Municipal Bond Fund
                       MFS(R) Municipal Bond Fund
                  MFS(R) Tennessee Municipal Bond Fund
                       MFS(R) Mid Cap Growth Fund
                   MFS(R) Virginia Municipal Bond Fund
                        MFS(R) Total Return Fund
                MFS(R) West Virginia Municipal Bond Fund
                          MFS(R) Research Fund
                      MFS(R) Municipal Income Fund
                     MFS(R) World Total Return Fund
                    MFS(R) Union Standard Equity Fund
                          MFS(R) Utilities Fund
                    MFS(R) Growth Opportunities Fund
                        MFS(R) World Equity Fund
                    MFS(R) Government Securities Fund
                      MFS(R) World Governments Fund
               Massachusetts Investors Growth Stock Fund
                            MFS(R) Value Fund
                 MFS(R) Government Limited Maturity Fund
                      MFS(R) Strategic Income Fund
                     Massachusetts Investors Trust

                 Supplement to the Current Prospectus

Until terminated by MFS Fund Distributors, Inc. ("MFD"), the Funds' distributor,
MFD will incur, on behalf of Royal Alliance  Associates,  Inc., up to $15 toward
the  ticket  charge  with  respect to  purchases  of shares of any MFS Fund made
through the GOLD Select Program.  MFD will not incur such charge with respect to
redemptions or repurchases of Fund shares,  exchanges of Fund shares,  or shares
purchased or redeemed through systematic investment or withdrawal plans.

            The date of this Supplement is October 1, 1997.

<PAGE>

                           MFS(R) Managed Sectors Fund
                         MFS(R) International Growth Fund
                         MFS(R) Government Mortgage Fund
                   MFS(R) International Growth and Income Fund
                        MFS(R) World Asset Allocation Fund
             MFS(R) /Foreign & Colonial Emerging Markets Equity Fund
                            MFS(R) New Discovery Fund
                      MFS(R) Research Growth and Income Fund
                        MFS(R) Alabama Municipal Bond Fund
                            MFS(R) Equity Income Fund
                       MFS(R) Arkansas Municipal Bond Fund
                        MFS(R) Research International Fund
                      MFS(R) California Municipal Bond Fund
                           MFS(R) Strategic Growth Fund
                        MFS(R) Florida Municipal Bond Fund
                           MFS(R) Emerging Growth Fund
                        MFS(R) Georgia Municipal Bond Fund
                           MFS(R) Large Cap Growth Fund
                       MFS(R) Maryland Municipal Bond Fund
                         MFS(R) Intermediate Income Fund
                     MFS(R) Massachusetts Municipal Bond Fund
                             MFS(R) High Income Fund
                      MFS(R) Mississippi Municipal Bond Fund
                            MFS(R) Municipal Bond Fund
                       MFS(R) New York Municipal Bond Fund
                            MFS(R) Mid Cap Growth Fund
                    MFS(R) North Carolina Municipal Bond Fund
                             MFS(R) Total Return Fund
                     MFS(R) Pennsylvania Municipal Bond Fund
                               MFS(R) Research Fund
                    MFS(R) South Carolina Municipal Bond Fund
                          MFS(R) World Total Return Fund
                       MFS(R) Tennessee Municipal Bond Fund
                              MFS(R) Utilities Fund
                       MFS(R) Virginia Municipal Bond Fund
                             MFS(R) World Equity Fund
                     MFS(R) West Virginia Municipal Bond Fund
                          MFS(R) World Governments Fund
                           MFS(R) Municipal Income Fund
                                MFS(R) Value Fund
                         MFS(R) Growth Opportunities Fund
                           MFS(R) Strategic Income Fund
                        MFS(R) Government Securities Fund
                             MFS(R) World Growth Fund
                   Massachusetts Investors Growth Stock Fund
                                 MFS(R) Bond Fund
                     MFS(R) Government Limited Maturity Fund
                           MFS(R) Limited Maturity Fund
                         Massachusetts Investors Trust
                      MFS(R) Municipal Limited Maturity Fund
                        MFS(R) Union Standard Equity Fund

                      SUPPLEMENT TO THE CURRENT PROSPECTUS


This Supplement describes certain changes, effective immediately, to each Fund's
Prospectus.

CHANGES TO SALES CHARGE WAIVER CATEGORIES. In Appendix A to the Prospectus,  the
following  new  subsection  is added under  Article II (Waivers of Class A Sales
Charges),  which sets forth the various circumstances in which the initial sales
charge imposed on purchases of Class A shares is waived:

     5.    Bank Trust Departments and Law Firms

              Shares  acquired by certain bank trust  departments  or law firms
              acting as trustee or manager for trust accounts which have entered
              into  an  administrative  services  agreement  with  MFD  and  are
              acquiring  such  shares  for the  benefit of their  trust  account
              clients.


                The date of this Supplement is February 1, 1998.
<PAGE>


                             MFS New Discovery Fund
                           MFS World Governments Fund
                      MFS Research Growth and Income Fund
                                 MFS Value Fund
                             MFS Equity Income Fund
                           MFS Strategic Income Fund
                        MFS Research International Fund
                             MFS World Growth Fund
                           MFS Strategic Growth Fund
                                 MFS Bond Fund
                            MFS Emerging Growth Fund
                         MFS International Growth Fund
                              MFS High Income Fund
                    MFS International Growth and Income Fund
                            MFS Mid Cap Growth Fund
              MFS/Foreign & Colonial Emerging Markets Equity Fund
                               MFS Research Fund
                               MFS Utilities Fund
                         Massachusetts Investors Trust
                             MFS World Equity Fund
                         MFS Union Standard Equity Fund

                      SUPPLEMENT TO THE CURRENT PROSPECTUS

This Supplement describes certain changes, effective immediately, to each Fund's
Prospectus Supplement describing Class I shares.


CHANGES TO  ELIGIBLE  PURCHASERS.  Paragraph  (iv) under the  caption  "Eligible
Purchasers" is hereby amended and replaced in its entirety as follows:

         (iv)     bank  trust  departments  or law firms  acting as  trustee  or
                  manager for trust accounts which initially  invest,  on behalf
                  of their  clients,  at least $100,000 in Class I shares of the
                  Fund  (additional  investments  may be  made  in any  amount);
                  provided that MFD may accept smaller  initial  purchases if it
                  believes,  in  its  sole  discretion,   that  the  bank  trust
                  department or law firm will make  additional  investments,  on
                  behalf  of its  trust  clients,  which  will  cause  its total
                  investment  to equal or exceed  $100,000  within a  reasonable
                  period of time.


                The date of this Supplement is February 1, 1998.
<PAGE>

 
                          MFS(R) Managed Sectors Fund
                     MFS(R) Municipal Limited Maturity Fund
                            MFS(R) Cash Reserve Fund
                        MFS(R) Government Mortgage Fund
                       MFS(R) World Asset Allocation Fund
                       MFS(R) Alabama Municipal Bond Fund
                           MFS(R) New Discovery Fund
                      MFS(R) Arkansas Municipal Bond Fund
                     MFS(R) Research Growth and Income Fund
                     MFS(R) California Municipal Bond Fund
                           MFS(R) Equity Income Fund
                       MFS(R) Florida Municipal Bond Fund
                          MFS(R) Strategic Growth Fund
                       MFS(R) Georgia Municipal Bond Fund
                       MFS(R) Research International Fund
                      MFS(R) Maryland Municipal Bond Fund
                          MFS(R) Emerging Growth Fund
                    MFS(R) Massachusetts Municipal Bond Fund
                          MFS(R) Large Cap Growth Fund
                     MFS(R) Mississippi Municipal Bond Fund
                        MFS(R) Intermediate Income Fund
                      MFS(R) New York Municipal Bond Fund
                            MFS(R) High Income Fund
                   MFS(R) North Carolina Municipal Bond Fund
                       MFS(R) Municipal High Income Fund
                    MFS(R) Pennsylvania Municipal Bond Fund
                           MFS(R) Municipal Bond Fund
                   MFS(R) South Carolina Municipal Bond Fund
                           MFS(R) Mid Cap Growth Fund
                      MFS(R) Tennessee Municipal Bond Fund
                            MFS(R) Total Return Fund
                      MFS(R) Virginia Municipal Bond Fund
                              MFS(R) Research Fund
                    MFS(R) West Virginia Municipal Bond Fund
                         MFS(R) World Total Return Fund
                          MFS(R) Municipal Income Fund
                             MFS(R) Utilities Fund
                       MFS(R) Union Standard Equity Fund
                            MFS(R) World Equity Fund
                        MFS(R) Growth Opportunities Fund
                         MFS(R) World Governments Fund
                       MFS(R) Government Securities Fund
                               MFS(R) Value Fund
                  Massachusetts Investors Growth Stock Fund
                          MFS(R) Strategic Income Fund
                    MFS(R) Government Limited Maturity Fund
                            MFS(R) World Growth Fund
                        Massachusetts Investors Trust
                                MFS(R) Bond Fund
                        MFS(R) International Growth Fund
                          MFS(R) Limited Maturity Fund
                  MFS(R) International Growth and Income Fund
                            MFS(R) Money Market Fund
             MFS/Foreign & Colonial Emerging Markets Equity Fund
                      MFS(R) Government Money Market Fund


                     SUPPLEMENT TO THE CURRENT PROSPECTUS

This supplement describes certain changes, effective immediately, to each Fund's
Prospectus.


1. DEFINITION OF "DEALER". As used in the Prospectus and any appendices thereto,
the term  "dealer"  includes  any broker,  dealer,  bank  (including  bank trust
departments),  registered  investment  adviser,  financial planner and any other
financial  institutions  having a selling  agreement or other similar  agreement
with MFS Fund Distributors,  Inc. ("MFD").  The use of the defined term "dealer"
does not mean or imply that any such  financial  intermediary  necessarily  is a
"dealer" for purposes of any federal or state laws,  rules or regulations or any
self-regulatory organization's rules.


2.  CHANGES TO SALES CHARGE  WAIVER  CATEGORIES.  Appendix A to the  Prospectus,
which describes waivers of sales charges, is amended as follows:


               Wrap  Account  and Fund  "Supermarket"  Investments.  The  waiver
              category entitled "2. Wrap Account Investments" under "II. Waivers
              of Class A Sales  Charges"  is amended to read in its  entirety as
              follows:

                       2. Wrap Account and Fund "Supermarket" Investments Shares
                      acquired by investments through certain dealers (including
                      registered  investment  advisers and  financial  planners)
                      which have established  certain  operational  arrangements
                      with MFD which include a  requirement  that such shares be
                      sold for the sole  benefit of clients  participating  in a
                      "wrap"  account,  mutual fund  "supermarket"  account or a
                      similar program under which such clients pay a fee to such
                      dealer.
<PAGE>

3. RECEIPT OF PURCHASE AND  REDEMPTION  ORDERS.  The Fund has  authorized one or
more brokers to receive  purchase and  redemption  orders on behalf of the Fund.
Such  brokers  are  authorized  to  designate  other  intermediaries  to receive
purchase and redemption orders on behalf of the Fund. The Fund will be deemed to
have  received a purchase or redemption  order when an authorized  broker or, if
applicable, a broker's authorized designee,  receives the order. Customer orders
will be priced  at the net asset  value of the Fund  next  computed  after  such
orders are received by an authorized broker or the broker's authorized designee.

                The date of this Supplement is March 16, 1998.

<PAGE>

                            MFS Managed Sectors Fund
                           MFS World Governments Fund
                        MFS World Asset Allocation Fund
                         MFS Capital Opportunities Fund
                             MFS New Discovery Fund
                           MFS Strategic Income Fund
                      MFS Research Growth and Income Fund
                             MFS World Growth Fund
                             MFS Equity Income Fund
                                 MFS Bond Fund
                        MFS Research International Fund
                           MFS Limited Maturity Fund
                           MFS Strategic Growth Fund
                          MFS Government Mortgage Fund
                            MFS Emerging Growth Fund
                         MFS International Growth Fund
                           MFS Large Cap Growth Fund
                    MFS International Growth and Income Fund
                          MFS Intermediate Income Fund
              MFS/Foreign & Colonial Emerging Markets Equity Fund
                              MFS High Income Fund
                         MFS Growth Opportunities Fund
                            MFS Mid Cap Growth Fund
                         MFS Government Securities Fund
                             MFS Total Return Fund
                   Massachusetts Investors Growth Stock Fund
                               MFS Research Fund
                      MFS Government Limited Maturity Fund
                          MFS World Total Return Fund
                         Massachusetts Investors Trust
                               MFS Utilities Fund
                         MFS Union Standard Equity Fund
                             MFS World Equity Fund

                      SUPPLEMENT TO THE CURRENT PROSPECTUS

This Supplement describes certain changes, effective immediately, to each Fund's
Prospectus.

CHANGES TO SALES CHARGE WAIVER CATEGORIES. In Appendix A to the Prospectus,  the
following  new  subsection  is added under  Article II (Waivers of Class A Sales
Charges),  which sets forth the various circumstances in which the initial sales
charge imposed on purchases of Class A shares is waived:

     6.    Investment of Proceeds From Certain Redemptions of Class I Shares

               The initial sales charge  imposed on purchases of Class A shares,
              and the  contingent  deferred  sales  charge  imposed  on  certain
              redemptions of Class A shares,  are waived with respect to Class A
              shares  acquired  of any of the MFS Funds  through  the  immediate
              reinvestment  of the proceeds of a redemption of Class I shares of
              any of the MFS Funds.

                  The date of this Supplement is June 5, 1998.

<PAGE>


                            MFS STRATEGIC GROWTH FUND

                  Supplement to the January 1, 1998 Prospectus


The section of the Prospectus  entitled  "Expense  Summary" is hereby revised as
follows to reflect the implementation of the 10 basis point Class A distribution
fee under the Fund's Distribution Plan:

1.    EXPENSE SUMMARY
<TABLE>
<S>                                                                                    <C>          <C>           <C>
Shareholder Transaction Expenses:                                                      Class A      Class B       Class C

      Maximum Initial Sales Charge Imposed on Purchases of
         Fund Shares (as a percentage of offering price).............................    5.75%         0.00%      0.00%
      Maximum Contingent Deferred Sales Charge (as a
         percentage of original purchase price or
         redemption proceeds, as applicable)......................................... See Below1       4.00%      1.00%

Annual  Operating  Expenses of the Fund (as a  percentage  of average  daily net
assets):

      Management Fees................................................................     0.75%        0.75%      0.75%
      Rule 12b-1 Fees (after expense limitation).....................................     0.35%(2)     1.00%(3)   1.00%(3)
      Other Expenses (after expense limitation)(4) (5)...............................     0.50%        0.50%      0.50%
                                                                                          -----        -----      -----
      Total Operating Expenses (after expense limitation)(6).........................     1.60%        2.25%      2.25%
</TABLE>
- --------------------
1.    Purchases of $1 million or more and certain  purchases by retirement plans
      are not subject to an initial sales charge; however, a contingent deferred
      sales charge ("CDSC") of 1% will be imposed on such purchases in the event
      of  certain  redemption  transactions  within  12  months  following  such
      purchases  (see  "Information  Concerning  Shares  of the Fund  Purchases"
      below).
2.    The Fund has adopted a distribution plan for its shares in accordance with
      Rule 12b-1 under the Investment Company Act of 1940, as amended (the "1940
      Act")  (the  "Distribution   Plan"),  which  provides  that  it  will  pay
      distribution/service  fees  aggregating up to (but not necessarily all of)
      0.35% per annum of the average  daily net assets  attributable  to Class A
      shares.  Distribution  expenses  paid under this Plan,  together  with the
      initial sales charge,  may cause  long-term  shareholders to pay more than
      the  maximum  sales  charge  that would have been  permissible  if imposed
      entirely as an initial sales charge.  (See "Information  Concerning Shares
      of the Fund - Distribution Plan" below).
3.    The   Fund's    Distribution    Plan    provides    that   it   will   pay
      distribution/service  fees  aggregating up to (but not necessarily all of)
      1.00% per annum of the average  daily net assets  attributable  to Class B
      and Class C shares,  respectively.  Distribution  expenses  paid under the
      Distribution  Plan together with any CDSC payable upon redemption of Class
      B and Class C shares,  may cause  long-term  shareholders to pay more than
      the  maximum  sales  charge  that would have been  permissible  if imposed
      entirely as an initial sales charge (see "Information Concerning Shares of
      the Fund Distribution Plan" below).
4.    The Fund has an  expense  offset  arrangement  which  reduces  the  Fund's
      custodian  fee based upon the amount of cash  maintained  by the Fund with
      its custodian and dividend disbursing agent, and may enter into other such
      arrangements and directed  brokerage  arrangements  (which would also have
      the effect of reducing the Fund's  expenses).  Any such fee reductions are
      not reflected under "Other Expenses."
5.    The  Adviser  has  agreed  to  bear  the  Fund's   expenses,   subject  to
      reimbursement  by the Fund, such that "Other Expenses" do not exceed 0.50%
      per annum of the Fund's average daily net assets during the current fiscal
      year. Otherwise, "Other Expenses" for each of Class A, Class B and Class C
      shares would be 0.76% per annum.
6.    Absent any fee reductions, "Total Operating Expenses" for Class A, Class B
      and Class C shares  would be 1.86%,  2.51% and  2.51%,  respectively  (see
      "Information Concerning Shares of the Fund - Expenses" below).
<PAGE>

                               Example of Expenses


      An investor would pay the following dollar amounts of expenses on a $1,000
investment in the Fund,  assuming (a) a 5% annual  return and (b)  redemption at
the end of each of the time periods indicated (unless otherwise noted):
<TABLE>
               <S>                                   <C>                          <C>                  <C>
               Period                                Class A                      Class B              Class C
               ------                                -------                      -------              -------
                                                                                         (1)                    (1)
               1 year....................               $ 73                $ 63        $ 23        $ 33       $ 23
               3 years...................                105                 100          70          70         70
               5 years...................                140                 140         120         120        120
               10 years..................                237                 242(2)      242(2)      258        258
</TABLE>

- -----------
1.   Assumes no redemption.
2.   Class B shares  convert to Class A shares  approximately  eight years after
     purchase; therefore, years nine and ten reflect Class A expenses.

      The  purpose  of  the  expense  table  above  is to  assist  investors  in
understanding the various costs and expenses that a shareholder of the Fund will
bear directly or indirectly.  More complete  descriptions  of the following Fund
expenses are set forth in the following  sections:  (i) varying sales charges on
shares purchases - "Information Concerning Shares of the Fund -Purchases";  (ii)
varying CDSCs - "Information  Concerning Shares of the Fund - Purchases";  (iii)
management  fees  "Management of the Fund - Investment  Adviser";  and (iv) Rule
12b-1 (i.e.,  distribution  plan) fees - "Information  Concerning  Shares of the
Fund - Distribution Plan."

      The "Example" set forth above should not be considered a representation of
past or future expenses of the Fund; actual expenses may be greater or less than
those shown.

                                              ***

      The section  entitled  "Current Level of Distribution and Service Fees" on
page 31 of the Prospectus is revised as follows: The Fund's Class A, Class B and
Class C  distribution  and service  fees for its current  fiscal year are 0.35%,
1.00% and 1.00% per annum, respectively.

                  The date of this Supplement is June 24, 1998.

<PAGE>

                       MFS Managed Sectors Fund
                       MFS Limited Maturity Fund
                         MFS Cash Reserve Fund
                  MFS Municipal Limited Maturity Fund
                    MFS World Asset Allocation Fund
                     MFS Government Mortgage Fund
                        MFS New Discovery Fund
                     MFS International Growth Fund
                  MFS Research Growth and Income Fund
               MFS International Growth and Income Fund
                        MFS Equity Income Fund
          MFS/Foreign & Colonial Emerging Markets Equity Fund
                    MFS Research International Fund
                    MFS Alabama Municipal Bond Fund
                       MFS Strategic Growth Fund
                   MFS Arkansas Municipal Bond Fund
                       MFS Emerging Growth Fund
                  MFS California Municipal Bond Fund
                       MFS Large Cap Growth Fund
                    MFS Florida Municipal Bond Fund
                     MFS Intermediate Income Fund
                    MFS Georgia Municipal Bond Fund
                         MFS High Income Fund
                   MFS Maryland Municipal Bond Fund
                    MFS Municipal High Income Fund
                 MFS Massachusetts Municipal Bond Fund
                         MFS Money Market Fund
                  MFS Mississippi Municipal Bond Fund
                   MFS Government Money Market Fund
                   MFS New York Municipal Bond Fund
                        MFS Municipal Bond Fund
                MFS North Carolina Municipal Bond Fund
                        MFS Mid Cap Growth Fund
                 MFS Pennsylvania Municipal Bond Fund
                         MFS Total Return Fund
                MFS South Carolina Municipal Bond Fund
                           MFS Research Fund
                   MFS Tennessee Municipal Bond Fund
                      MFS World Total Return Fund
                   MFS Virginia Municipal Bond Fund
                          MFS Utilities Fund
                 MFS West Virginia Municipal Bond Fund
                         MFS World Equity Fund
                       MFS Municipal Income Fund
                      MFS World Governments Fund
                     MFS Growth Opportunities Fund
                    MFS Capital Opportunities Fund
                    MFS Government Securities Fund
                       MFS Strategic Income Fund
               Massachusetts Investors Growth Stock Fund
                         MFS World Growth Fund
                 MFS Government Limited Maturity Fund
                             MFS Bond Fund
                     Massachusetts Investors Trust
                    MFS Union Standard Equity Fund

                 SUPPLEMENT TO THE CURRENT PROSPECTUS

This Supplement describes certain changes to each Fund's Prospectus.

Effective  September  15, 1998,  each Fund will adopt the  following  new market
timing  policy  which will  replace the current  policy as  disclosed  under the
heading "Information Concerning Shares of the Fund - Purchases - General - Right
to Reject Purchase Orders/Market
Timing" in the Prospectus:

Right to Reject Purchase Orders/Market Timing. Purchases and exchanges should be
made for  investment  purposes  only. The Fund and MFD each reserve the right to
reject or restrict any specific purchase or exchange request.  In the event that
the Fund or MFD rejects an exchange  request,  neither  the  redemption  nor the
purchase side of the exchange will be processed.

The  MFS  Family  of  Funds  is not  designed  for  professional  market  timing
organizations or other entities using programmed or frequent exchanges.  The MFS
Family of Funds defines a "market timer" as an individual or organization acting
on behalf of one or more  individuals,  if (i) the  individual  or  organization
makes six or more  exchange  requests  among the MFS Family of Funds or three or
more  exchange  requests  out of any of the MFS  high  yield  bond  funds or MFS
municipal  bond  funds  per  calendar  year and  (ii)  any one of such  exchange
requests  represents shares equal in value to $1 million.  Accounts under common
ownership or control,  including accounts administered by market timers, will be
aggregated for purposes of this definition.

As noted above,  the Fund and MFD each  reserves the right to reject or restrict
any specific purchase and exchange request and, in addition, may impose specific
limitations  with  respect to market  timers,  including  (i) delaying for up to
seven days the  purchase  side of an  exchange  request by market  timers,  (ii)
rejecting  or  otherwise  restricting  purchase or  exchange  requests by market
timers;  and (iii)  permitting  exchanges by market timers only into certain MFS
Funds.

Provision of Annual and Semiannual Reports

To  avoid  sending  duplicate  copies  of  materials  to  households,  effective
September 15, 1998, only one copy of each Fund annual and semiannual  report may
be mailed to  shareholders  having  the same  residential  address on the Fund's
records.  However,  any shareholder may call the Shareholder  Servicing Agent at
1-800-225-2606 to request that copies of such reports be sent personally to that
shareholder.


             The date of this Supplement is July 1, 1998.
<PAGE>

                       MFS(R) Managed Sectors Fund
                       MFS(R) Limited Maturity Fund
                         MFS(R) Cash Reserve Fund
                  MFS(R) Municipal Limited Maturity Fund
                   MFS(R) Global Asset Allocation Fund
                     MFS(R) Government Mortgage Fund
                        MFS(R) New Discovery Fund
                     MFS(R) International Growth Fund
                  MFS(R) Research Growth and Income Fund
               MFS(R) International Growth and Income Fund
                        MFS(R) Equity Income Fund
          MFS/Foreign & Colonial Emerging Markets Equity Fund
                    MFS(R) Research International Fund
                    MFS(R) Alabama Municipal Bond Fund
                       MFS(R) Strategic Growth Fund
                   MFS(R) Arkansas Municipal Bond Fund
                       MFS(R) Emerging Growth Fund
                  MFS(R) California Municipal Bond Fund
                       MFS(R) Large Cap Growth Fund
                    MFS(R) Florida Municipal Bond Fund
                     MFS(R) Intermediate Income Fund
                    MFS(R) Georgia Municipal Bond Fund
                         MFS(R) High Income Fund
                   MFS(R) Maryland Municipal Bond Fund
                    MFS(R) Municipal High Income Fund
                 MFS(R) Massachusetts Municipal Bond Fund
                   MFS(R) High Yield Opportunities Fund
                  MFS(R) Mississippi Municipal Bond Fund
                         MFS(R) Money Market Fund
                   MFS(R) New York Municipal Bond Fund
                   MFS(R) Government Money Market Fund
                MFS(R) North Carolina Municipal Bond Fund
                        MFS(R) Municipal Bond Fund
                 MFS(R) Pennsylvania Municipal Bond Fund
                        MFS(R) Mid Cap Growth Fund
                MFS(R) South Carolina Municipal Bond Fund
                         MFS(R) Total Return Fund
                   MFS(R) Tennessee Municipal Bond Fund
                           MFS(R) Research Fund
                   MFS(R) Virginia Municipal Bond Fund
                     MFS(R) Global Total Return Fund
                 MFS(R) West Virginia Municipal Bond Fund
                          MFS(R) Utilities Fund
                       MFS(R) Municipal Income Fund
                        MFS(R) Global Equity Fund
                     MFS(R) Growth Opportunities Fund
                      MFS(R) Global Governments Fund
                    MFS(R) Government Securities Fund
                    MFS(R) Capital Opportunities Fund
               Massachusetts Investors Growth Stock Fund
                       MFS(R) Strategic Income Fund
                 MFS(R) Government Limited Maturity Fund
                        MFS(R) Global Growth Fund
                     Massachusetts Investors Trust
                             MFS(R) Bond Fund
                    MFS(R) Union Standard Equity Fund


                  SUPPLEMENT TO THE CURRENT PROSPECTUS


Until terminated by MFS Fund Distributors, Inc. ("MFD"), the Funds' distributor,
MFD will incur, on behalf of H. D. Vest Investment Securities, Inc., the initial
ticket  charge of $15 with  respect to  purchases of shares of any MFS fund made
through  VESTADVISOR  accounts.  MFD will not incur such charge with  respect to
redemptions or repurchases of fund shares,  exchanges of fund shares,  or shares
purchased or redeemed through systematic investment or withdrawal plans.


           The date of this Supplement is September 15, 1998.



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