https://www.cnet.com/news/final-fantasy-7-remake-kingdom-hearts-3-announced-too-early-games-director-admits/

The two games were announced prematurely, admits Square Enix's Tetsuya Nomura, director of both.

"Deciding when to announce your game to the public is always difficult," he told Italian gaming mag Multiplayer in an interview that was translated by Kingdom Hearts Insider. Conceding Kingdom Hearts 3 was unveiled prematurely, he said it's better for Square Enix to make it official rather than have misleading leaks colour public perception of a game.