When Disney bought all of Lucasfilms, it would have seemed that Indiana Jones was naturally included in the deal. And it was. But because Hollywood deal structures are so byzantine they make one’s nose bleed, they had to finalize the arrangement by purchasing marketing and distribution right from Paramount.
Which they did. So Indiana Jones is theirs now.
No plans have been announced for a sequel, but come on. A long as Harrison Ford is alive or on life support, there will be future Indiana Jones films. Surprisingly, despite all his gruff behavior towards Star Wars, Harrison Ford has actually expressed an interest in returning to the hat and bullwhip.
As long as he hires a private security team to keep Shia LaBeouf away from the set, we’re going to allow this to move forward.