Hyper-V Server R2 RC available!
Just in case you missed it with all the announcements around the public availability of Windows Server 2008 R2 and Windows 7 Client Release Candidates in the last week. Microsoft has also made the Hyper-V Server R2 RC available for download here
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).