<PAGE>
Filed Pursuant to Rule 497(e)
Registration File No.: 33-26375
SUPPLEMENT TO THE PROSPECTUS
OF MORGAN STANLEY DEAN WITTER WORLD WIDE INCOME TRUST
DATED FEBRUARY 3, 2000
On October 26, 2000, the Board of Trustees of Morgan Stanley Dean Witter
World Wide Income Trust (the "Fund") approved an Agreement and Plan of
Reorganization by and between the Fund and Morgan Stanley Dean Witter
Diversified Income Trust ("Diversified Income"), pursuant to which
substantially all of the assets of the Fund would be combined with those of
Diversified Income and shareholders of the Fund would become shareholders of
Diversified Income receiving shares of Diversified Income equal to the value
of their holdings in the Fund (the "Reorganization"). Each shareholder of the
Fund will receive the Class of shares of Diversified Income that corresponds
to the Class of shares of the Fund currently held by that shareholder. The
Reorganization is subject to the approval of shareholders of the Fund at a
special meeting of shareholders scheduled to be held on March 27, 2001. A proxy
statement formally detailing the proposal, the reasons for the Trustees'
action and information concerning Diversified Income will be distributed to
shareholders of the Fund.
October 26, 2000
