Release Candidates everywhere!
So the last week has had a lot of news about the public availability of release candidates for Hyper-V R2 Server, Windows 2008 R2 Server and the Windows 7 Client operating systems. They were initially available for Technet and MSDN subscribers, but now are public, see links below.
Hyper-V Server R2 RC
Windows Server 2008 R2 RC
Windows 7 RC
Hyper-V Server is a standalone free product, details here .The highlight features for the R2 release will be the inclusion of High Availability and Live Migration features (while still remaining a free product).