The May 2011 Update release of the SQL Server 2008 R2 Update for Developers Training Kit is available for download at the following URL:

http://go.microsoft.com/?linkid=9710868

The May 2011 update is a maintenance release which provides support for Windows 7 SP1, Windows Server 2008 R2 SP1 and Visual Studio 2010 SP1. Additionally, any demos or hands-on labs that no longer have a Visual Studio 2008 dependency were updated to Visual Studio 2010.  There is no new content in this release.

Enjoy!