Kind of curious if Disney will do anything. I'm not sure if we'll see a 4K release on Disney+ anytime soon, since I'm pretty sure Paramount still owns the distribution rights to the first four films (and presumabely YIJ), so any 4K stuff would have to go through them. There are rumors that Paramount is planning for a release of at least Raiders though.
Of course there's also the Bethesda video game, although it's unclear when that will be released.
Not expecting any special action figures or anything; the 2008 line kind of flopped I think, with some of the later waves being extremely limited or con-exclusive due to poor sales. While Star Wars has a lot of toy potential, Indiana Jones is of course a bit more grounded in "real life" and history so it doesn't quite have the kid appeal at least merchandise-wise, outside of premium stuff for collectors.