'Indiana Jones 5' In Pre-Pre-Pre-Production

We knew an Indiana Jones 5 was on the long-list over at Disney...but has a stage already been booked?
There's one more thing too, and we went back to double check this point with our source. The planning office is listing which stages are booked in advance, and for what film. Listed on those plans - before Christmas at least - was Indiana Jones 5.

To address the Indiana Jones point specifically: work on that has been mooted as a possible job as part of those long-term contracts. It's very much being described as a "possible lead in to another Indy", but nothing more than that.

Just because space has been booked well in advance doesn't mean that the film will happen of course. Still, we've sat on this information since before Christmas, and it would at least tie into what Alan Horn of Disney said in December, that the next Indiana Jones film - to which Disney now holds full rights - is many years off. It would make sense to include it as part of a bulk LucasFilm booking at Pinewood (considering the firm's commitment to and investment in UK facilities), just to be on the safe side (and it'd bring the rate down, we'd imagine).
Source: Den of Geek