Hi
If you dont have MSDN or Technet subscription.
Windows 7 beta
http://www.microsoft.com/windows/windows-7/beta-download.aspx
Windows 2008 R2 Beta
I tested them in Hyper-V and Host machine and my tablet PC.I will write something about Windows 2008 R2 Beta. Many things to discover. There are many links about general information. My news will be about my W2008 Lab.
About Windows 7. Mi tablet PC runs well. I need some drivers from HP website to install all devices.
The first impresion is good for boths.
sAnTos