After a few teaser videos and numerous details, Level-5 has finally released the official debut trailer for Yo-kai Watch Jam: Yo-kai Academy Y. The game has only been announced for Japan at this time, and is set to release during Summer 2020. This will be a single-player-only title at launch, but multiplayer will come via update later. It's also worth noting that there's no physical release at this time, but one is being considered in the future.
Yo-Kai Watch it right now!