That"s right folks, according to sources close to Microsoft - XPSP2 is due to RTM on the 23rd June. This sets dates back and looks towards an RC2 release. Currently internal testing is at build 2103 (6.00.2900.2103 (xpsp.040330-1748). Working towards a late June RTM would mean beta testers are likely to get another interim or Release Candidate to play with soon.
Previous estimates have (like other SPs) been strictly no RC2 and a release in May to RTW but it seems like this isn"t the case. Whatever happens we"ll keep you updated, but for now it seems, RC1 is not the last beta we"ll be seeing of XPSP2.
Estimates are that we"ll see RC2 around the time of WinHec but that it won"t be shown at the show.