Tetsuya Nomura, the man at the helm of development Kingdom Hearts 3announced the probability of a game on a hybrid console Nintendo. Console owners should not jump out of their pants in advance, as Nomura does not say, and if the game does show up on the Switch, it will not be quick.
This became known from the interview he gave to the magazine. Famitsu. To the journalist's question about the port, he said that "It is possible". The priority was Xbox One and PS4, and because the game is already available on these platforms, developers are looking at other platforms.