If you want an answer the team that makes main Kingdom Hearts games has been developing Final Fantasy Versus XIII which was announced in 2006 and still has yet to be released. until that game is released its doubtful development will even start on a Kingdom Hearts 3.I mean damn,been waiting for it since KH2 dropped on PS2. How they never made one for this gen is beyond belief. They'd be smart to release it on the PS4 or even both systems
If you want an answer the team that makes main Kingdom Hearts games has been developing Final Fantasy Versus XIII which was announced in 2006 and still has yet to be released. until that game is released its doubtful development will even start on a Kingdom Hearts 3.
the Kingdom Hearts DDD on the 3DS does continue the story after Kingdom Hearts 2.