imageWindows Server 2008 R2 also got some great enhancements as well.  RemoteFX is a new enhancement for Hyper-V, which willow the ability to run 3D applications within a Hyper-V VM.  This allows the virtual desktop experience to get even closer to the look and feel of an actual desktop.  IT provides a great multimedia experience through VDI.

The other big change to hyper-v that was made in Windows Server 2008 R2 will also get Dynamic Memory, which will allow you to adjust memory of a guest virtual machine on demand to maximize server hardware usage.  Some really cool stuff!

Great Post here: Dynamic Memory Coming To Hyper-V 

Full virtualization announcement here: http://www.microsoft.com/Presspass/press/2010/mar10/03-18DesktopVirtPR.mspx