This is the reason I haven't been updating journals or uploading art. This project has been keeping a big crew very busy. Finally, a bit of a teaser look and news. As for the teaser trailer, it's in the works but I don't know when it will be out. 2012, for sure.
Nothing too spoilery.
http://www.hitfix.com/blogs/motion-captured/posts/we-sit-down-with-william-joyce-for-a-first-look-at-rise-of-the-guardians