First off, you wont find this information anywheres on the net. And I'm not 100% sure if it is true.
But, I heard from a guy that goes to Film school that he had this weekly Hollywood Industry class, where each week a different industry insider comes to talk to all the aspiring film students.
Anyways, one week was Jason Blumenthal, the producer of Pursuit of Happiness and The Weather Man, among other movies.
And he shared a tidbit with his class that about one of his upcoming projects, a comedy called "Pierre Pierre", directed by Jason Reitman. It stars Jim Carrey, who apparently asked Blumenthal and co. to find him a career-rejuvenating script. The only other detail Blumenthal shared was that the script "makes Borat look like Bambi."
And that's all the info I got for this upcoming project.