5.2.82008-12-08stableFor users upgrading from PHP 5.0 and PHP 5.1, an upgrade guide is available [here](/UPDATE_5_2.txt), detailing the changes between those releases and PHP 5.2.8.
For a full list of changes in PHP 5.2.8, see the [ChangeLog](/ChangeLog-5.php#5.2.8).