Produno is not publishing it enough so I write about it! ;D
Changelog:
http://aworldoficeandfire.co.uk/Forums/index.php?topic=33799.0
Download:
http://www.moddb.com/mods/a-world-of-ice-and-fire/downloads/a-world-of-ice-and-fire-v13-patch#downloadsform
If Produno don't say the opposite, a new game is not need but probably recommended.
And as always, thanks for the cool mod and updates!