There was an article online last night that describes a few details about the upcoming shoot for August: Osage County. Location manager Joe Guest spoke at a Bartlesville financial forum where they discussed the helpful impact that filming will have on the respective local economies. From what they were describing it sounds like the film is going to be a rather large production. We already know that the budget (at least according to imdb) is a cool $50,000,000. I imagine that includes the considerable costs of paying very big-name actors. I gather that most of the filming will be done in the home they've chosen in Pawhuska, with a bit done in Bartlesville as well.
It's been reiterated from this article that shooting indeed begins on Monday, September 24, and is evidently scheduled to go about three months. The estimated shooting schedule length surprised me a little. I assumed they'd have this wrapped up in about six weeks. However, this was a very long play, and my guess is that they're going to do a ton of filming and pare it down in post. Maybe that way Tracy Letts didn't have to make too many cuts to his script. I really don't have much idea on how these things work, I'm just creating a scenario in my mind because I so badly want the film to include all the best parts (yes, I need to get a major grip).
So, we're only about two weeks out from shooting and I'm very excited to see updates over the coming months. Including a finalized cast, perhaps...? Ugh.