The first release candidates of 5.3.9 was just released for testing and
can be downloaded here:
http://downloads.php.net/johannes/php-5.3.9RC1.tar.bz2 (md5sum:
5e8564008606edfab6a81137c1daf354)
The windows binaries are available at: http://windows.php.net/qa/
This is the first step in the release process of this versions and goal
is having a 2nd RC two weeks from now. Majority of the changes are of
the "bug fix" variety. One important change is for bug #55475 [1] where
PHP 5.3.7 changed the behavior of is_a(). 5.3.9 will revert the
behavior. Please ensure that the release is solid and all things behave
as expected! Please test this RC against your code base and report any
problems you encounter or successful tests you've run.
Johannes Schlüter
PHP 5.3 Release Master