I saw it in action at a launch event down in Birmingham. it is basically MS VirtualPC on steroids. It has one big requirement though that may catch a few by surprise: it requires a 64-bit OS.

I adderssed the shortcomings found in vpc like no access to USB devices. It is basically a thin layer between the host OS and guest and allows the guest access to the hardware, not a virtualized version like vmware or vpc. OF course that brings new problems for us the security pros. Go fingure one step forward and two back....