Beta of this is up on connect, details from Somasegar. Vista compat is great to hear, it will be interesting to see how well VS runs on Vista (speaking of which the 5728 post RC1 build is now public).
Have hear that the beta SP1 is very slow to install. What about. Was it fast enough
Yes it is very slow to install (at least it was for me). Dunno what's up with that, but in my case it did succeed.