The Release Candidate for SCVMM 2008 R2 is now available on Microsoft Connect. Now, both the next version of Hyper-V and the management infrastructure to go along with it are available. Use the link below to log in to Connect and download SCVMM 2008 R2.
SCVMM 2008 R2 RC: https://connect.microsoft.com/site/sitehome.aspx?SiteID=799
If you have any questions during your testing you can also head to the forums here:
SCVMM Forum on Technet: http://social.technet.microsoft.com/Forums/en-US/category/virtualmachinemanager

