A new "Refresh" version of Windows XP Service Pack 3 Release Candidate 2 was made available Tuesday on Microsoft Update, according to Microsoft representatives.
The primary goal of the release is for its developers to validate improvements to the Windows Update procedure, but a couple of minor additions were also included. As with the previous RC2, you need to download and run a small program available from Microsoft Download Center that makes a registry change on your PC in order for the update to be offered.