Looks really helpful, a few quick questions:
Where can I get my hands on it to try

Does it make a complete copy of the virtual machine or does it used linked clones, seems to take a long time to set up the test machines.
If I have Virtual machine manager 2008 installed, can I use my ESX servers as well as Hyper-V?
Does it support multimonitor, can I open connections to each VM on different monitors?
Where are the images stored, I kind of got the impression that there would be VM going into TFS, which would be a really space issue!
And finally can I create an environment add machines and then template all the machines as a whole?