The first release candidate of PHP 5.2.10 was just released and is available for download at:
http://downloads.php.net/ilia/php-5.2.10RC1.tar.bz2 (md5sum: 4ef611fdcf7269b2d372dbdebc504cdb)
For windows users, the all manner of binary packages can be found at:
http://windows.php.net/qa/
This is a stabilization release with a whole bunch of bug fixes and no new features, so I hope it'll get released quickly. You can help make it happen by testing your code against this RC and reporting any new bugs and/or regressions you come across.