Epic looks like it could be good, but I honestly don't know much about it, except that it's based on a 1996 book by William Joyce, The Leaf Men and the Brave Good Bugs.
Joyce, who won an Oscar earlier this year for the short film The Fantastic Flying Books of Mr. Morris Lessmore, is serving as a writer and executive producer on the movie.
The synopsis from distributor 20th Century Fox reads:
Epic is a 3D CG action-adventure comedy that reveals a hidden world unlike any other. From the creators of Ice Age and Rio, Epic tells the story of an ongoing battle deep in the forest between the forces of good and the forces of evil. When a teen age girl finds herself magically transported into this secret universe, she must band together with a rag-tag team of fun and whimsical characters in order to save their world…and ours.Epic is being helmed by Ice Age and Robots director Chris Wedge and features the vocal talents of Beyoncé, Colin Farrell, Josh Hutcherson, Amanda Seyfried, Johnny Knoxville, Steven Tyler, Aziz Ansari, and Jason Sudeikis.