At PDC 2009 we have announced roadmap and details on release of Microsoft project codenamed "Velocity" under Windows Server AppFabric, to download latest bits and more details please check out following links.

On-Premises or in the Cloud, One Consistent Composite Application Experience for Developers 

 http://www.microsoft.com/presspass/features/2009/nov09/11-17PDCAppFabric.mspx?rss_fdn=Top%20Stories

Windows Server AppFabric

http://msdn.microsoft.com/en-us/windowsserver/ee695849.aspx 

Thanks

Microsoft project codenamed "Velocity" Team