DBB Invesco DB Base Metals Fund

Invesco PowerShares Capital Management LLC, a leading provider of exchange-traded funds (ETFs), announced its emerging markets infrastructure portfolio begins trading today on the NYSE Arca.

--  PXR - PowerShares Emerging Markets Infrastructure Portfolio
    

The PowerShares Emerging Markets Infrastructure Portfolio (PXR) is an exchange-traded fund (ETF) based on the S-Network Emerging Infrastructure Builders Index(SM). The Index is designed to measure the overall performance of securities of companies involved in infrastructure construction and development in emerging market countries. Industries include, but are not limited to, construction and engineering, construction machinery, construction materials, diversified metals and mining, heavy electrical equipment, industrial machinery and steel.

Invesco PowerShares is leading the intelligent ETF revolution through its family of more than 100 domestic and international index-based and actively managed exchange-traded funds. With assets under management as of June 30, 2008, of approximately $13.95 billion, PowerShares ETFs trade on all of the major U.S. stock exchanges that trade ETFs. For more information, please visit us at www.invescopowershares.com.

Invesco PowerShares is a part of Invesco Ltd., a leading independent global investment management company dedicated to helping people worldwide build their financial security. By delivering the combined power of its distinctive worldwide investment management capabilities, including AIM, Atlantic Trust, Invesco, Perpetual, PowerShares, Trimark, and WL Ross, Invesco provides a comprehensive array of enduring investment solutions for retail, institutional and high-net-worth clients around the world. Operating in 20 countries, the company is currently listed on the New York Stock Exchange under the symbol "IVZ." Additional information is available at www.invesco.com.

There are risks involved with investing in ETFs, including possible loss of money. The Fund is not actively managed and is subject to risk similar to stocks. Ordinary brokerage commissions apply.

Shares are not FDIC insured, may lose value and have no bank guarantee.

Small- and Medium-Sized Company Risk Information

An investment in securities of small and medium-sized companies involves greater risk than is customarily associated with investing in more established, larger sized companies.

Foreign Risk Information

An investment in the securities of non-U.S. issuers involves risks beyond those associated with investments in U.S. securities, including, but not limited to: greater market volatility, the availability of less reliable financial information, higher transactional and custody costs, taxation by foreign governments, decreased market liquidity, political instability, negative impact of changes in currency exchange rates or foreign governmental regulation, currency risk, fluctuation due to changes in interest rates, effects of monetary policies issued by the United States, foreign governments, central banks or supranational entities and currency controls or other national or global political economic developments, among others.

Emerging Market Securities Risk

Investment in securities in emerging market countries involves risks not associated with investments in securities in developed countries.

Industry and Sector Risk

When a Fund is focused in a specific industry or sector, it presents greater risks than if it were broadly diversified over numerous industries and sectors of the economy. Please read the prospectus for a summary of these risks pertaining to each industry or sector.

The Fund has greater exposure to the potential adverse economic, regulatory, political and other changes affecting infrastructure companies because of investments in such entities. Infrastructure companies are subject to a variety of factors that may adversely affect their business or operations.

PowerShares� is a registered trademark of Invesco PowerShares Capital Management LLC. Invesco PowerShares Capital Management LLC and Invesco Aim Distributors, Inc. are indirect, wholly owned subsidiaries of Invesco Ltd. S-Network Global Indexes, LLC(SM) and S-NETWORK EMERGING INFRASTRUCTURE BUILDERS INDEX(SM) are service marks of S-Network Global Indexes, LLC and have been licensed for use by Invesco PowerShares Capital Management LLC. The PowerShares Emerging Markets Infrastructure Portfolio is not sponsored, endorsed, sold or promoted by S-Network Global Indexes, LLC and S-Network Global Indexes, LLC makes no representation regarding the advisability of investing in the PowerShares Emerging Markets Infrastructure Portfolio. Invesco PowerShares Capital Management LLC is not affiliated with S-Network Global Indexes, LLC.

Shares are not individually redeemable and owners of the shares may acquire those shares from the Fund and tender those shares for redemption to the Fund in Creation Unit aggregations only, typically consisting of 100,000 shares.

Invesco Aim Distributors, Inc. is the distributor of the PowerShares Exchange-Traded Fund Trust II.

An investor should consider the Fund's investment objective, risks, charges and expenses carefully before investing. For this and more complete information about the Fund call 800.983.0903 for a prospectus. The prospectus contains this and other information regarding the Fund. Please read the prospectus carefully before investing.

Media Contacts: Kristin Sadlon Porter Novelli 212-601-8192 Email Contact Bill Conboy BC Capital Partners 303-415-2290 Email Contact