We know that the Kingdom Heart 3 game will be the end for the storyline, but it is definitely not the end of the game as Square Enix has announced that there will be more Kingdom Heart title in the future.
Square Enix are probably regretting their decision to release the Kingdom Heart 3 trailer. Before the release, the fans were just hoping that the game will be developed but now that they have confirmed the game, the fans are not going to let them go until the game is release.
So when will the game be arriving? It was initially speculated that the game will be arriving this year after Amazon seems to have accidentally leaked the release date, but Square Enix later announced that the game will have to be delayed as they will be switching to a new platform.
At this rate, we will be lucky if the game ends up arriving in 2016