completely upgrading the entire game with the Dofus 2.0 update, as you know. However, now they can finally show you what they've been working on with a video and information page! The game code is being rewritten for improved performance all around and the visuals are -- as you can see -- getting a very nice overhaul as well. Our only complaint is that characters in-game are still incredibly small, which is something of a bother for players who love to customize and stare at their avatars for hours on end.
Ankama is promising more information soon, but they did make it clear that no characters will be reset and no servers will be shut down. This is only a visual and internal upgrade, it's like an MMO version of a face-lift only not as painful and probably more effective overall. If you're really jonesing for more information you can check out the Dofus 2.0 devblog.