Pioneer Diversified High Income Trust (NYSE Amex: HNW) Announces Revised Payable Date for April Distribution

BOSTON--(Business Wire)--
Pioneer Diversified High Income Trust (NYSE Amex: HNW) today announced a revised
payable date for the fund`s April distribution declared on April 5, 2010. The
payable date will be May 3, 2010. The Ex Date, Record Date, and Distribution
Rate reported on April 5, 2010 remain unchanged.

Notes

HNW currently has a level distribution policy, which is intended to provide
investors with a relatively stable monthly distribution. The level distribution
policy is subject to regular review by the Board of Trustees to determine
whether it continues to be in the best interests of the fund and its
shareholders. There can be no assurance that this policy will be maintained in
the future or maintained at its current level. Investors should not necessarily
draw any conclusions about the fund's investment performance from the amount of
this distribution or from the terms of the fund's level distribution policy.

At this time, HNW believes that a portion of its fiscal year-to-date cumulative
distributions may include a return of capital in addition to net investment
income and long-term capital gains. A return of capital is not a distribution of
income or capital gains from the fund, does not necessarily reflect the fund's
investment performance, and should not be considered "yield" or "income." The
final determination of tax characteristics of the fund`s distributions will
occur after the end of the year, at which time it will be reported to
shareholders.

HNW trades on the NYSE Amex. Pioneer Investment Management, Inc. is the fund`s
investment adviser.

Keep in mind, dividends are not guaranteed. Closed-end funds, unlike open-end
funds, are not continuously offered. There is a one-time public offering and
once issued, common 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. For performance data on
Pioneer's closed-end funds, please call 800-225-6292 or visit our closed-end
pricing page.

© 2010 Pioneer Investment Management, Inc.
Member of the UniCredit Banking Group,
Register of Banking Groups

Pioneer Investment Management, Inc.
Shareholder Inquiries: Please contact your financial advisor or visit
pioneerinvestments.com.
or
Broker/Advisor Inquiries Please Contact:
800-622-9876
or
Media Inquiries Please Contact:
Geoff Smith, 617-422-4727

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