Recall that a few years ago, WB was going to make a JLA film based on the Tower of Babel story line starring Armie Hammer as Batman, Common as Green Lantern, etc. It was put on ice shortly after its confirmation (because of the budget, I believe). I also recall that it was going to be entirely motion-captured, which in my opinion, would be the best thing for a film like that. Especially when George Miller, the director of Happy Feet was going to be involved.
Well it appears that WB has gone ahead and re-opened the project, although I'm not sure if they're going to use the same premise. It is also unknown if they will build towards it with solo films starring Wonder Woman, Flash, Aquaman, etc. I did hear, however, that Wonder Woman just got a new writer as well, so I'm assuming that hers may be the start the DCCU (DC Cinematic Universe).
The original source was Variety, and they're sources are usually very good, so I don't think this is BS. The minute I hear more, I'll let you guys know.... But I'm sure that if there's bigger news, the site would've already heard by now :P