Hi there.  Ward here to provide you an update on Windows Server 2008 R2 which we announced last week at the PDC in Los Angeles. 
This week at both TechED EMEA and WinHEC, Microsoft provided more details and demos around features and capabilities expected for Windows Server 2008 R2, our release update to Windows Server 2008.    Key enhancements in R2 include Live Migration, BranchCache, DirectAccess, and PowerShell 2.0 to name a few. 
Attendees at PDC and WinHEC received a pre-beta build of both Windows Server 2008 R2 and Windows 7 referred to as “M3” or milestone 3.  Once we finalize the beta, we will make it generally available on our website – until then, you had to attend PDC or WinHEC to get M3.  We expect to deliver the beta early next year. 
In the meantime, there are a lot of resources and information you can take advantage of at www.microsoft.com/windowsserver2008r2 to learn more.
Ward Ralston
Group Product Manager