The latest version of the PHP language has been released according to this new post on the PHP.net site. PHP version 5.5.1 has been added to the downloads list.
The PHP development team announces the immediate availability of PHP 5.5.1. About 20 bugs were fixed including a security fix in the XML parser (Bug #65236). For source downloads of PHP 5.5.1 please visit our downloads page, Windows binaries can be found on windows.php.net/download/. The list of changes is recorded in the ChangeLog.
Other fixes included changes for bugs in the Opcache, CLI test webserver, DateTime, PDO (OCI8 and Pgsql) and Phar.