"Sony hasn’t yet announced the development of a Zombieland sequel, but with a worldwide budget of over $85 million, it is likely only a matter of time. Moviehole has an interview with Zombieland director Ruben Fleischer, who revealed that not only is Sony interested in a sequel, but if they can 'crack' the story for a sequel, it will probably be shot in 3D. Fleischer believes that 'the genre really lends itself to [3D]', and is convinced the technology is now there. And who wouldn’t want to see a fun 3D zombie film?
As for the sequel, who knows when it might get off the ground. Fleischer has a bunch of potential projects lined up, and the screenplay hasn’t even been written, although there are plenty of ideas. As you probably know by now, Zombieland was conceived as a television pilot, and was rewritten to fill a feature film. Screenwriters Rhett Reese and Paul Wernick told io9 in October that they already planned a '23 episode season' out, 'So divided by two that’s about 12 movies in our head swimming around.' … 'And we’ll take what we intended to be episode three of the television show and start movie number two.'"
AWESOME!! I'd love to see a Zombieland 2 in 3D!! Although a few of my friends won't. The Zombieland DVD comes out on Feburary 2nd (on Bill Murray's Groundhog Day).