Finally got around to releasing the next stable release of FUDforum, 2.6.13. For the most part it is the same as RC2, with just a few note worthy changes. The Japanese and Romanian translations were updated, Win32 finally has proper timezone support through a custom subset of timezone values and some more adjustments to the nested category display. The latter seems to have been an ongoing problem throughout the .13 release cycle and I sincerely hope we've finally hammered out all of the possible problems with it.
The upgrade and installation scripts are available at the usual location:
http://fudforum.org/download.php.
On a related note, I am now working on a PDO database driver for the forum. This will allow FUDforum to expand it's database support beyond MySQL and PostgreSQL as well as benefit from an improved API offered by PDO. Many of PDO's convenience functions would significantly simplify the process of retrieving data for certain operations.