Windows Vista went RTM (Release to Manufacturing) last week and was recently added to the MSDN downloads.  I pulled it down last night and am installing it on a Toshiba M400 Tablet that I’ve been testing out.  We’ll see how it works, I’m excited to see some of the visual enhancements even though I was a little disapointed that then had to rip out the new search features because of time constraints.  I will also be installing Office 2007 on this machine to put that through it’s paces as well.