Emily Blunt, Rachel Weisz & Mark Duplass To Topline Lynn Shelton's Untitled New Comedy

Update: Variety reports that Mark Duplass, who starred in Shelton’s “Humpday” will be joining the film playing a man who comes between the two sisters.

We’re beginning to suspect that Rachel Weisz has cloned herself. The actress has two projects in the can, the well-reviewed drama “The Whistleblower,” and Jim Sheridan’s supernatural thriller “Dream House,” and now, no less than four new films lined up. She’s making an appearance alongside Ben Affleck, Rachel McAdams and Javier Bardem in the untitled Terrence Malick film that’s currently shooting, she takes the lead in Terrence Davies’ “The Deep Blue Sea” in November, and was the first to sign on for the ensemble cast of Fernando Meirelles’ “360,” and has now somehow found the time to fit in another project along the way, one that’s just as tantalizing as the others.

In an apparent bid to pick up all ten available Oscar nominations in 2012, Weisz will star alongside Emily Blunt (who’s almost as busy, with “Salmon Fishing in the Yemen” currently filming, and recently signing on to Rian Johnson’s “Looper”) in an untitled new film from director Lynn Shelton, who was behind last year’s Sundance hit “Humpday.” The film will revolve around a pair of sisters, played by Blunt and Weisz, and like Shelton’s earlier film, will be semi-improvised.

While we weren’t quite convinced by “Humpday,” the idea of two of our favorite actresses teaming up like this is enough for us to book a ticket right now. Production, which will only last a couple of weeks, begins in Seattle later in the month. There’s no news of any other talent involved, but we suspect some other biggish names may find room in their schedules to join them.

In the same story, Deadline also report that Weisz will be spending only one week on the Malick film, suggesting that her role is likely to be little more than a cameo, at least until more details leak out about that one. We’ve got a hunch that the secrecy is because Malick’s actually making a sequel to “Daredevil.” [Deadline]