https://www.gamespot.com/articles/super-smash-bros-ultimate-seems-like-the-best-smas/1100-6459764/

We've known that a new Super Smash Bros. game has been in development, and during the E3 2018 Nintendo Direct, Super Smash Bros. Ultimate was revealed. It's an original Smash game built specifically for the Nintendo Switch, and it features every single character that has ever been included in a Smash game.