PHP 5.4 reaches End-of-Life, PHP 7.0 release schedule filled, PHP 7.1 Branched

PHP 5.4 hit EOL yesterday (end of life). There will not be any further security updates for it. You should be using PHP 5.6 anyway, it is slightly faster.

http://php.net/supported-versions.php#layout-content

Meanwhile PHP 7.1 has now received its own branch and the rest of the release candidate schedule has been filled out on the timetable:

https://wiki.php.net/todo/php70#timetable

Sep 17 2015 PHP7 RC 3
Oct 01 2015 PHP7 RC 4
Oct 15 2015 PHP7 RC 5
Oct 29 2015 PHP7 RC 6
Nov 12 2015 PHP7 Final

So every other Thursday through November will bring more and more stability to PHP 7.0 which will be the most important PHP release since PHP 4