DBB Invesco DB Base Metals Fund

Invesco PowerShares Capital Management LLC, a leading provider of exchange-traded funds (ETFs) announced today the anticipated listing of an emerging markets infrastructure portfolio on the NYSE Arca in October.

--  PXR - PowerShares Emerging Markets Infrastructure Portfolio
    

"Emerging market countries building infrastructure necessary to sustain their economic growth have created enormous worldwide demand," said Bruce Bond, President and CEO of Invesco PowerShares. "We believe the PowerShares Emerging Markets Infrastructure Portfolio (PXR) will provide investors a precise way to capture a global group of companies responsible for construction and development of emerging market infrastructure using the benefit-rich ETF structure."

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.

Non-Diversified Fund Risk Information

The Fund is considered non-diversified and can invest a greater portion of assets in securities of individual issuers than a diversified fund. As a result, changes in the market value of a single investment could cause greater fluctuations in share price than would occur in a diversified fund.

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.

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. The S-Network Emerging Infrastructure Builders Index(SM) is licensed for use by Invesco PowerShares Capital Management LLC. The PowerShares Emerging Markets Infrastructure Portfolio is not sponsored, endorsed, sold or promoted by S-NET. S-NET makes no representation or warranty, express or implied, to the owners of the PowerShares Emerging Markets Infrastructure Portfolio or any member of the public regarding the advisability of investing in securities generally or in the PowerShares Emerging Markets Infrastructure Portfolio particularly or the ability of the S-Network Emerging Infrastructure Builders Index(SM) to track the performance of the securities market.

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.

The information in the prospectus is not complete and may be changed. The Funds may not sell their Shares until the registration statement filed with the Securities and Exchange Commission is effective. The prospectus is not an offer to sell the portfolios' Shares, nor are the portfolios soliciting an offer to buy their Shares in any jurisdiction where the offer or sale is not permitted.

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