Windows Vista Service Pack 1 is now available as a download on Microsoft MSDN Subscription Downloads.

For the release notes, see http://download.microsoft.com/download/5/4/2/5429cde5-32d4-4e55-bf9a-553111438d86/relnotes.htm.

For an overview of significant changes and improvements, see http://go.microsoft.com/fwlink/?LinkID=107921.

For a list of the hotfixes and security updates included in SP1, see http://go.microsoft.com/fwlink/?LinkID=107922.