Ankama and Square-Enix have announced that Wakfu's open beta will begin on January 4th. The date will also mark the release of content update 0.311, which will bring a new achievement tracking tool and the Srams Shadow class to the game. The Shadow is an assassin archetype who comes complete with invisibility mechanics and the ability to dish out considerable melee damage.
The devs will also be wiping the servers for the open beta phase, but contest, promotional items, and holiday event items will persist through the reset. Ankama is also temporarily removing two classes (the Ecaflip and the Rogue) for further balancing. Look for the Rogue and its rival Masqueraider to make their return shortly after Wakfu's February launch.
[Thanks to AterNox for the tip!]