PHP 5.2.7RC3 has been released. It is likely to be the last RC and the final release is planed for Thursday next week. Please test it and report any issue you may found. The sources can be fetched here and the binaries in the windows site.
He also mentions a milestone for the PHP project - releasing the Windows builds at the same time as the normal source builds. Check out on the php.internals list for more information.