We are running Windows 7 Enterprise here on a couple machines in the IT Essential lab. Works great, even on a half gig of RAM. I was surprised since Vista requires 4 gig to run half decent. My students like it better than Vista, although it has no mail client. I think MS is scheduled to release this version to the public October something. We belong to the MSDNAA so we are privy to current releases before they hit the public. Windows 7 Ultimate is on the schedule as well.