At PDC 2008 and WinHEC 2008 Microsoft will announce details about the next release of Windows codename Windows Seven. This post will inform you about what is coming to Windows Seven Server, which’ll be released as Windows Server 2008 R2.
Hyper-V 2.0: 2008 R2 will include Hyper-V R2, it promises to deliver the final pieces for enterprise level OS virtualization (together with SCVMM2008) and to really compete with VMware at that level.
Live Migration: The most anticipated is of course Live Migration: moving running VM's from one host to another without interruption of services running inside the VM's. To accomplisch this technique a new shared filesytem is needed and so will also be introduced in Hyper-V 2.0: Clustered Shared Volumes.