SC DPM 2010 RC is out, if you want to download it and test it on Hyper-V go here http://connect.microsoft.com/site840/Downloads/DownloadDetails.aspx?DownloadID=26452
An interesting article on SC DPM 2010 to backup Hyper-V here http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=c9d141cf-c839-4728-af52-928f61bebdca