UPDATE: The Nut Job is a HUGE success, making more money in its opening weekend than any other indie animated film. So, of course, the companies behind the nutty film will make a sequel! Nothing else is secured, like if director Peter Lepeniotis or any of the stars will be back. When a movie is expected to be a success, usually they have the stars sign a contract promising to come back but with a small film made out of South Korea, I feel pretty certain they did NOT make a deal for future films with the film's key voices, Katherine Heigl or Will Arnett.
April 11, 2013 - The Nut Job isn't looking so squirrley anymore. Open Road Films, the folks behind The Host, has picked up the 3D animated film about a squirrel and a rat who plan to steal the nuts from a nut store. It will be in theaters Jan. 17 of next year. The voice cast includes Will Arnett ("30 Rock," "Up All Night"), Brendan Fraser (Journey to the Center of the Earth), Katherine Heigl (Life as We Know It), Liam Neeson (The Dark Knight Rises, Star Wars Episode 1: The Phantom Menace, Battleship), Stephen Lang (Avatar), ventriloquist Jeff Dunham (Dinner with Schmucks) and Sarah Gadon (Cosmopolis).
Will Arnett has had Gobs of VO jobs including as villainous Mr. Perkins in Despicable Me and The Missing Link in Monsters vs. Aliens. Fraser, who makes a point of starring in movies for kids, was the lead voice as Scorch Supernova in February's Escape from Planet Earth. Neeson has a long list of VO roles including Aslan in The Chronicles of Narnia: The Lion, The Witch and the Wardrobe. You'd think Dunham would've done a ton of VO work since he's a ventriloquist, but the list is rather short - however, he was a voice in From Up on Poppy Hill.
Jan. 18, 2011 - Over the Hedge writer Lorne Cameron (who also writes for Disney) will help jump start the film careers of animation companies Toonbox Entertainment and Redrover by writing the stereoscopic 3D pic The Nut Job. The companies already collaborate on TV series (which play in foreign markets) but this will be the first feature film. The Nut Job is about a squirrel named Surly and his rat buddy named Buddy who liven up their quiet home of the city park.
Source: The Hollywood Reporter