Check it out here.
New features includes.
- Better utilization of memory resources on a Hyper-V host.
- Allows administrators to create and deploy Virtual Machines and report on the "currently in use" memory.
- More efficient utilization of memory, consistent performance and higher consolidation ratios.
- Allows administrators to create and deploy Virtual Machines with RemoteFX enabled to qualified Windows Server 2008 R2 SP1 Hyper-V hosts.
- New set of end user experience enhancements.
- Rich, local-like desktop enivronment over the network.