Recent comments by Square Enix haven’t been the most encouraging on that front- but there may be more to it than even that.
For reference, consider Final Fantasy 15– as the game neared completion, Square Enix was sharing more and more footage of that game, sometimes on a daily basis.
Kingdom Hearts 3, will, of course, come- the question is, when?
That’s not a lot of footage at all, and it doesn’t seem to suggest that the game is anywhere close to release.