Whether it’s a temporary title or a smokescreen remains to be seen (since actual story details are scarce), but the title being used with some official capacity is: INDIANA JONES AND THE CITY OF THE GODS.
Like I said, it’s a name that’s been associated with the project for years (along with a dozen or so others), but this is the first time we’ve seen it actually labeled on the production (thanks to ‘Stranger’ for the tip). But gods or city or not, the flick will definitely be in theaters next summer with Harrison Ford, Cate Blanchett, Ray Winstone, Shia LaBeouf, and Tony Jaa as a grown-up Short Round (I wish).