RC1 for Hyper-V Now Available for Download
IT pros wanting to try out the latest Microsoft Hyper-V virtualization technology can now get the Release Candidate 1 (RC1) version via Windows Update. This optional version, which contains minor improvements, was first announced by Microsoft last month.
RC1 contains a few performance and bug fixes over RC0, according to the Microsoft Windows Virtualization Product Group Team Blog. Integration components (ICs) have been added to the integration services setup disk. RC1 also supports IPv4 address migration. There's also an improvement to work with Linux virtual machines.