MS has released DX9 b2 to testers, here is whats avaliable:
Microsoft DirectX 9.0 End-User Downloads (Beta 2)
Use the DirectX 9.0 Beta 2 web-based setup to install the end-user runtime only. This setup will install on all supported Operating Systems and minimizes the download size to only the DirectX components your system requires.
Microsoft DirectX 9.0 (Beta 2) Software Development Kit
This is the full DirectX 9.0 SDK download. It contains the updated components listed above. It does not contain some of the DirectX 9.0 SDK CD content, such as Symbol Files, D3D XFile Exporters, and DirectShow DVD components. All of these can be found on in the DirectX 9.0 SDK Extras download.
Microsoft DirectX 9.0 (Beta 2) Software Development Kit Extras
The Extras are tools and utilities not included in the Microsoft® DirectX® 9.0 Software Development Kit (SDK). This include Symbols, D3D XFile Exporters, AppWizard, and DirectShow® components
Microsoft SDK Sample Binaries for Game Enthusiasts (Beta 2)
This download contains only the SDK Beta 2 sample binaries and media in a separate download designed specifically for the game enthusiasts. Please test all the sample binaries on as many configurations as possible. Remember to file bugs for any issue you may uncover.
DirectMusic Producer (Beta 2)
DirectMusic® Producer is the authoring tool that allows composers and sound designers to create content for DirectX® audio. We've packaged the DirectMusic Producer download separately so composers and DirectMusic Producer enthusiasts can free themselves from downloading the entire DirectX SDK
News source: Beta Place (password required)
Download: DirectX 9 Beta 2 @ Driverheaven (30mb)
Download: DirectX 9 beta 2 Webinstaller @ fileconnect (0.22mb)