Now it's said the new movie will be a "continuation" of Crystal Skull.
Variety attended CinemaCon where they note producer Frank Marshall stated Indiana Jones 5 will not be a prequel, but a continuation of the story from where it left off with Indiana Jones and the Kingdom of the Crystal Skull in 2008.
They didn't directly quote Marshall, so before everybody flips their lid, more than likely Frank Marshall means not a direct continuation, just that the events that happened in Crystal Skull will still be relevant or referenced in the new movie.
The end of Crystal Skull saw Indiana Jones marry Marion and get reinstated at Marshall College and made an associate dean; so more than likely that may play a part in Indiana Jones 5, than say any of the goofy alien stuff.
Marshall also said there are no plans to replace Harrison Ford on Indiana Jones like the actors are with the James Bond (or Batman) movies. Ditto with Matt Damon and Jason Bourne.
“It’s all about the story. I think both in the ‘Jason Bourne’ series and on ‘Indiana Jones,’ we are not going to do the Bond thing,” Marshall said. “We think those characters are iconic, and those are the only actors who can play that.”
The fifth untitled Indiana Jones movie has a July 19, 2019 release date.