http://blogs.technet.com/matthts/archive/2008/10/01/windows-hyper-v-server-2008-is-rtm.aspxHyper-V Server 2008 is RTM. You can download it as of October 1st. Microsoft Hyper-V Server 2008 provides a simplified, reliable, and optimized virtualization solution, enabling improved server utilization and reduced costs. Since Hyper-V Server is aen-USCommunityServer 2.1 SP1 (Build: 61025.2)