https://www.gameinformer.com/nintendo-direct/2018/09/13/animal-crossing-coming-to-switch-in-2019

Following the announcement of Animal Crossing’s Isabelle joining the Super Smash Bros. Ultimate roster, Tom Nook appeared on screen with a brief announcement that it is time to get back to work.

A new Animal Crossing game is coming to Switch in 2019. No other details were revealed at this time.