There is a new game possibly (most likely if you ask KH13) in development entitled Kingdom Hearts 2.9, so report both KH13 and Polygon. I'd guess KHI doesn't deviate at all from KH13 if they've reported on it yet. If you haven't already, read the full post by KH13 for all the details, but it's leaked information based on a post from a game designer who worked on both KH2.9 and KH3 for 10 months. Here'a pic! It shows that he worked on meetings with both Disney and Pixar, suggesting possible Pixar worlds in (at least?) KH3. Also, note that he worked on multiplayer planning.

And keep in mind, KH3 is still not scheduled for TGS (next week!) but there is a private event scheduled.