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MFS(R) New Discovery Fund
Supplement to the Current Prospectus
Effective January 1, 2000, footnote (3) of the Expense Table in the Expense
Summary section is hereby revised as follows:
(3) MFS has contractually agreed to bear the fund's expenses, subject to
reimbursement, such that "Other Expenses", after taking into account the expense
offset arrangement described below, do not exceed 0.30% annually. This
contractual fee arrangement will continue until at least January 1, 2001, absent
an earlier modification approved by the board of trustees which oversees the
fund.
The date of this Supplement is January 24, 2000.
