RPM of final release of php 5.3.9 are available for Fedora and for Enterprise Linux (RHEL/CentOS) in remi repository. This version will be available really soon in official updates for fedora ≥ 15 (after testing stage).
Read the announce: PHP 5.3.9 Released!
This version fixes various security bugs. All users are encouraged to upgrade to this release.
Use YUM to install : yum --enablerepo=remi update php-\* Notice : the php package now provides both apache modules, for prefork and worker mode. The php-zts package is removed. For fedora ≥ 12 et EL-5, the new php-fpm extension is available (an alternative to php-cgi). Read PHP-FPM and NGINX and PHP-FPM and LIGHTTPD. Packages will also be... Lire php-5.3.9