The 5.2.0 release is turning to be quite an adventure, we can't seem to get the bloody thing out. Hopefully RC6 will be the last release candidate, but given that I've said that about the last 3RCs, who knows...
This said, the delays were not entirely unproductive and every time more bugs were fixed and language was generally made better, so it is not all bad. The release snapshots is available here:
http://downloads.php.net/ilia/php-5.2.0RC6.tar.bz2 (md5: 5a146c08f85d8535c76fe6219281a06e) and win32 binaries will be made available shortly be Edin.
As always I'd like to ask everyone to give this release a try to make sure no regressions were introduced and to make sure that your applications can still work with this release. If no major issues are uncovered, maybe, just maybe 5.2.0 in a week.