http://www.htxt.co.za/2017/06/26/square-enix-teases-big-announcements-for-gamescom-2017/
This was posted a few days ago and I made sure nobody posted on this, so I should be good
Since it's safe to assume that kingdom hearts 3 has entered the promotion stage, is it possible they could announce a new world at gamescom 2017. I wouldn't be surprised if that would happen