Annual Meetings for Five of Pioneer Investments' Closed-End Funds To Be Held on September 22, 2008

Pioneer Investment Management, Inc. announced today that the annual shareholder meetings for Pioneer Diversified High Income Trust (AMEX: HNW), Pioneer Floating Rate Trust (NYSE: PHD), Pioneer High Income Trust (NYSE: PHT), Pioneer Municipal High Income Trust (NYSE: MHI), and Pioneer Municipal High Income Advantage Trust (NYSE: MAV) will be held on September 22, 2008. With respect to each fund, shareholders of record as of the close of business on July 9, 2008 will be entitled to vote at the meeting. The only matter to be acted upon at each meeting is the election of trustees.

These funds are closed-end investment companies. Pioneer Investment Management, Inc. is each funds investment adviser.

Closed-end funds, unlike open-end funds, are not continuously offered. There is a one-time public offering and once issued, shares of closed-end funds are bought and sold in the open market through a stock exchange and frequently trade at prices lower than their net asset value. Net asset value (NAV) is total assets less total liabilities divided by the number of common shares outstanding.

©2008 Pioneer Investment Management, Inc. 60 State Street Boston, MA 02109

Member of the UniCredit Banking Group, Register of Banking Groups

Contacts:

Pioneer Investment Management, Inc.
Geoff Smith, 617-422-4727 (Media Inquiries)
or
800-622-9876 (All Other Inquiries)

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