As you can see, the last version of the BizTalk 2010 shifts the platform support to new versions of the .NET, SQL Server, and Visual Studio, and finish support for the previous platform versions.

High-quality picture in PDF format.

See Also

Another important place to find a huge amount of BizTalk related articles is the TechNet Wiki itself. The best entry point is BizTalk Server Resources on the TechNet Wiki.