Give Windows Vista SP1 Release Candidate a try. It's now available as a free download for developers, IT Pros, and other tech professionals. There are three ways to get the product. Use Windows Update Download the standalone packages Get it...

MSDN Subscribers can now get Windows Vista SP1 Release Candidate on MSDN Subscriber Downloads . In addition, we've published a series of resources about this latest release of Windows Vista on the Windows Vista Developer Center . Enjoy!