Check out the new BPI Developer Center on MSDN. (http://msdn.microsoft.com/bpi/)
Business Process and Integration (BPI) is the name of the Microsoft Product Group that builds BizTalk Server, Commerce Server, and Host Integration Server, among other projects.
The new BPI Developer Center is a centralized effort to deliver documentation, samples, downloads, third-party add-on information, community informationfor developers and other users of the products, etc. Check out the site and the variety of information that they already have. If you’ve got ideas about other types of content would be good here, post a comment and I will forward that information on to them.
How about an RSS feed? I can’t find one on the BPI homepage.