Hyper-V RC1 is available for download. More info can be found here. A couple of things to note:

  • Saved-state files and online snapshots are different so discard these before upgrading.
  • The current SCVMM 2008 Beta does not support RC1.
  • There is support for Windows 2000 SP4 guests.
  • Integration Components disk (iso) contain the binaries needed for all Windows guest operating systems including Windows Server 2008.
  • Static IPv4 migration when you create a virtual network bound to an adapter with an existing fixed IPv4 address.

While we are on the subject of Hyper-V, check out the Microsoft Virtualization Team Blog. It contains a couple of interesting posts including some more WMI examples.