As of late Friday, Miscrosoft has released Windows Vista RC2. According to the Windows Vista team blog, the new build offers a higher level of performance and stability as well as fixing many of the bugs in RC1.
Personally, I'm quite surprised to see Vista coming along so close to schedule. I think MS has been pouring resources into it now that they're all too aware of Apple's rising market share.
While I'll be intrigued to test out the new OS, I'm still pretty intent on my next computer being a Macbook Pro!