Virtual Server 2005 R2 SP1 (isn't that a mouthful?) is now available for free download in both 32bit (x86) and 64bit (x64) versions.

New features include:

  • PXE boot support for guest OSes
  • A command line tool for mounting VHDs as virtual drives on other OSes
  • Support for Volume Shadow Copy snapshots as a backup mechanism
  • Virtual Server can run more than 64 guest OSes on x64 platforms
  • 128GB is now the default size for expanding disks

But, still not 64 bit guest support (thay won't be available until Longhorn Server Virtualisation codename Viridian ships next year)