Well this is a shocker as I thought PHP 4.3.5 would be the last of the 4s. :S Maybe 4.3.6 will be the golden release :D
In the spirit of release early, release often here is the first and hopefully the final release candidate of PHP 4.3.6. This release addresses 2 major bugs introduced in the 4.3.5 release. One of these bugs caused problems when loading dynamic extensions on Windows and thread-safe (ZTS) builds and the other involves incorrect handling of daylight savings time. A few other minor bugs were fixed as well.
News source: PHP.net