Last week MED-V 1.0 SP1 was released as part of the Microsoft Desktop Optimization Pack (MDOP) 2010 refresh.  This update adds some key new functionality:

• Support for Windows 7 hosts – both 32-bit and 64-bit
• Support for running the MED-V server on Windows Server 2008 R2
• Support for Japanese Windows versions

Note that MED-V 1.0 SP1 still only supports Virtual PC 2007 SP1, so you will be running Virtual PC 2007 SP1 on Windows 7 (not Windows Virtual PC). It also means that Microsoft now can use native VHD booting for a MED-V demo environment.
Existing MDOP customers can download the MDOP 2010 Refresh at the Volume Licensing Service Center (VLSC).  For people with MSDN / TechNet subscriptions, the MDOP 2010 Refresh can be downloaded from MSDN and TechNet.

If you do not know what MED-V is or why you should care – if you need to use Virtual PC to solve an application compatibility problem on more than half-a-dozen computers – you need to be looking at MED-V to provide a deployment and management solution for your virtual machines.  More details hare here: www.microsoft.com/med-v