Unlike the previous version, a legacy stable version, 5.2.x is no longer synced with 5.3.x. People still using PHP 5.2.x are urged to upgrade to 5.3.x as it's no longer supported by PHP team.
Another news is that PHP will discontinue to provide PHP binaries for Windows user that is compiled using Visual Studio C++ 6 as it's no longer maintained by Microsoft.
Windows users: please mind that we do no longer provide builds created with Visual Studio C++ 6. It is impossible to maintain a high quality and safe build of PHP for Windows using this unmaintained compiler. You can download Windows binaries from Windows.php.net, while the source can be downloaded from Download page
For Apache SAPIs (php5_apache2_2.dll), be sure that you use a Visual Studio C++ 9 version of Apache. We recommend the PHP builds as provided by ApacheLounge. For any other SAPI (CLI, FastCGI via mod_fcgi, FastCGI with IIS or other FastCGI capable server), everything works as before. Third party extension providers must rebuild their extensions to make them compatible and loadable with the Visual Studio C++9 builds that we now provide.