I'm not getting my hopes up until its greenlit. Plan B is pitts development company, and Baldwin Entertainment Group are the ones with the rights. BEG has been consulting with luminaries from The Objectivist Center (NOT the Ayn Rand institute, which would be bad news for the movie) and they have been working for about a decade on a shorter script, with three-part miniseries versions that Turner was going to produce, and now a single moview version that will be reportedly 3 hours long. Though there has been some talk of doing it as two movies, or a trilogy like the Lord of the rings, I believe the script now is a single movie.
The book is, of course, quite long, but there is a lot of it that can be lost- many of the sub-plots about various businesses who shrugged and secondary and tertiary characters can be lost.
So long as they don't get Antonio Banderas for Francisco, I'm up for it.
I think Pitt would be a good John Galt because Galt is, ultimately, a minor character with little "screen time", though I think Pitt may want to play Rearden. I am confident that Jolie can do a great Dagny, if she's in the mood to.... but for both of them, Pitt and Jolie, they really want to have this movie made and I think they will make it even if their schedules don't work out for acting in it.
I think Jolie is a terrible casting choice. A friend of mine suggested that a more appropriate choice would be some unknown actor. I think that would lend a lot of credibility.
I wonder if Ms Jolie understands the point of the book.