System Center Virtual Machine Manager (SCVMM) 2008 R2 SP1 RC Available on Microsoft Connect
Microsoft have announced SCVMM 2008 R2 Service Pack 1 Release Candidate, which can be download from https://connect.microsoft.com/site799. This release adds support for Windows Server 2008 R2 SP1 RC to SCVMM. Microsoft has added the necessary properties and controls to allow you to create and manage Dynamic Memory and RemoteFX enabled virtual machines on Windows Server 2008 R2 SP1 Hyper-V hosts. Since this is a pre-release version, usage of this is limited to test environments.
Patrick Lownds