alienfluid writes to mention that RC1 of Windows Vista is now complete. This 'nearly complete' version of the operating system is already available to beta testers, and will be available to everyone else soon. From the article: "You'll notice a lot of improvements since Beta 2. We've made some UI adjustments, added more device drivers, and enhanced performance. We're not done yet, however -- quality will continue to improve. We'll keep plugging away on application compatibility, as well as fit and finish, until RTM. If you are an ISV, RC1 is the build you should use for certifying your application."