The first release candidate of 5.2.9 was just released for testing and can be downloaded here:
http://downloads.php.net/ilia/php-5.2.9RC1.tar.bz2 (md5sum: 0252cc45cce713c10e2fae34aa9e406c)
The Windows binaries should become available shortly as well, for now you can grab the win32 snapshots from snaps.php.net. This is a purely a bug-fix release, which is only a few months old, so I am hoping for a real quick release cycle. The next RC will be out a week from now and if all is well, it'll be the final RC. To make this possible, please test this RC against your code base and report any problems that you encounter.