So you cant wait to try out SP3 for XP or SP1 for Vista!?
Well, there is a way to squeeze your way into the MS-Beta program 🙂
http://4sysops.com/archives/download-windows-xp-sp3-rc1-with-this-little-hack/
I am still thinking about it, I had some problems with IE7 beta so I am slightly reluctant. For XP users however it should according to some posts be quite a boost in performance.