In May of last year, DreamWorks Animation announced their release schedule through 2012.  Among the original films scheduled were the caveman comedy The Croods, Truckers, and "Super Secret Ghost Project".  Today, the magazine License Global reports that "Super Secret Ghost Project" is officially titled Boo U.  Based on the title, I think it's safe to assume that it's about an educational institution for ghosts, the little girl from Monster's, Inc., or girlfriends and boyfriends.

License Global also reports that Truckers is based on Terry Pratchett's "The Bromeliad Trilogy".  Per Wikipedia, "The trilogy tells the story of the Nomes, a race of tiny people from another world who now live hidden among humans. Through the books they struggle to survive in the world and, once they learn of their history from an artifact known as "The Thing", make plans to return home."  Neither Truckers or Boo U currently has a release date.