Thanks Bink...OK this is not completely confirmed but yet, but I'm pretty sure that build 3657 will be Release Candidate 1, finally.
Mentioned in an earlier posting here MS locked down the builds since 3639 which means no more new features and gadgets added, just testing, bug fixes to the golden build! 1st RC2 maybe RC3 and then RTM in Q4 2002 Still, it means Microsoft will have something to shout about in November. Steve says RC1 isn't absolutely confirmed, but that Microsoft has upgraded its Domain Controllers to the current build, 3657, which was produced on 27th June, and this is a promising sign.
The .NET Server beta has been in feature freeze mode since build 3639, since when the beta has concentrated on shaking out bugs and achieving something stable enough for Release Candidate status.
News source: Bink Windows XP