He's not going to return now that it seems next to none of the original cast will be involved. This was very nice to see, just so sad that Harold is no longer.
Completely off topic: I think Paul Feig finally made a good movie with A Simple Favor.
Anyway, here we are. At times it looked like we were going to get Indy / Batman / Ghostbusters in the same summer like 1989. But they're spread out due to circumstances.