Jonah Hill and James Franco are set to join JAY AND SETH VS. THE APOCALYPSE which, with their addition, won’t be using that name any longer. The film’s original focus was just on Baruchel and Rogen but as they were writing the script, the expanded the scope of the film and involved other characters, necessitating a title change (it will now just be THE APOCALYPSE).
In the film, Rogen, Baruchel, Franco and Hill will all be playing themselves; actors who get stuck in the same house together as the apocalypse is raining down outside. The longer they spend together, the more they realize they don’t like each other all that much. The film is described as a horror-comedy that Rogen adds is “very strange.”
Considering the ambitious scope of the film, I’d imagine a studio must be involved but there’s no word yet on who’s funding the project (I’ll guess Sony Pictures, where Rogen has set up many of his films with Goldberg).