Windows Vista Service Pack 1 has been released to manufacturing. The roll-out to end-users will begin in mid-March although not everyone will see it then. Microsoft has identified some drivers that work fine in the gold release of Vista but do not work with SP1. So if Microsoft detects those drivers on your PC you won’t be offered the update automatically.
Paul Thurrott’s SuperSite for Windows has a Windows Vista SP1 FAQ with more information.
So, is the release of SP1 enough to improve Windows Vista’s reputation?
Update: Paul Thurrott thinks Microsoft may have shipped SP1 before it’s ready.