https://www.gamespot.com/articles/super-smash-bros-switch-pre-order-guide/1100-6459374/

The list of things in life that are totally dependable is short, but it contains things like death, taxes, and a new Smash Bros. game on every Nintendo console. Nintendo's latest hardware is no exception--the company has announced that Super Smash Bros. will be coming to Nintendo Switch sometime in 2018.

We don't know many specifics yet, like the release date or the roster, but it's safe to assume it will pit a whole slew of Nintendo characters (among others) against one another in multiplayer brawls. Based on the teaser trailer above, it's safe to assume the Inkling boy and girl from Splatoon will be in the game, along with series regulars Mario and Link.