Well Vista RC1 is now available for download (woohoo!) I've been running it for about the past week or so and I have to say it is SOOOO much better than Beta 2!
I'm now running it on my production laptop and haven't had a need to slip back to XP... infact XP seems really dated since using Vista.
I've also been using my HTC TyTn as my Bluetooth modem in Vista and it's been absolutely rock solid. I've been doing this because I can't seem to find any 3G Datacard drivers from any of the operators :(
You can download RC1 from HERE or order a DVD