PHP 5.3.9 was released 10 days ago (January 10, 2012) and includes lots of security and bug fixes (Changelog).
And here are the 64 bit thread safe and non thread safe builds for Windows. As usual, they were compiled with Visual C++ 2008 (VC9) and can be used with VC9 versions of Apache.
I am providing mirrors this time, but please use them only if you are unable to download from mediafire for some reason.
VC9 x64 Thread Safe
VC9 x64 Non Thread Safe
Additional extensions can be found here – http://www.mediafire.com/php-win64-extensions.
As of now, the following extensions are available – APC, dbase, eAccelerator, geoip, http, memcache, mongo, printer, ssh2 and win32service.