We previously reported that Greg Mottola’s untitled comedy that stars Larry David, Jon Hamm and Michael Keaton may be debuting on HBO.  Now we have a bit more clarity on what the plot of the film concerns and more information on what Keaton’s character will be.  The partially improvised comedy seems like it will play out as a feature-length version of David’s successful Curb Your Enthusiasm series.  Hit the jump for more on the project.

Fox Searchlight is developing a comedy that, if it comes together, offers a very exciting team-up.  Larry David is and Greg Mottola (Superbad) are in talks to star and direct, respectively.  The screenplay is credited to Alec Berg, Jeff Schaffer, and David Mandel, a trio who works with David on Curb Your Enthusiasm and co-wrote The Dictator.  THR was unable to ascertain any details about the plot, other than it will be improvised as David does with Curb.  (David and his writers outline the plot, but the dialogue is largely improvised by the actors.)

Last night it was announced Mottola will adapt Jeffrey Eugendies’ novel The Marriage Plot—at the time, there was curiously only speculation that the writer/director might also take the helm.  This report paints a clearer picture, suggesting Mottola might be saving the spot for this project.  I am very eager to hear more about what they have in mind—we will pass along the details once they surface.