Well, it seems after some time being in beta Vista Service pack 2 is available to download. With any big update I would wait a few weeks to a month or longer for them to patch any issues or bugs that may crop up. Also, this service pack can be used if you have Windows Server 2008. Here are the links to 32 bit and 64 bit versions:

32 bit

Download details: Windows Server 2008 Service Pack 2 and Windows Vista Service Pack 2 - Five Language Standalone (KB948465)

64 bit

Download details: Windows Server 2008 Service Pack 2 and Windows Vista Service Pack 2 - Five Language Standalone for x64-based systems (KB948465)

Hmmm, the last time Vista updated my laptop it nuked it... still, here's to hoping they're moving in the right direction. I wonder how long they'll offer Vista after 7 starts shipping?

Vista SP2 has been available through MSDN for about a month or so now, I've it installed it on about 5-6 pc's so far I haven't had any issues with it.