I doubt a new Animal Crossing Switch game will be Nintendo's top priority, considering them just updating New Leaf and working on a bunch of other games they have promised, such as Spla2n, Super Mario Odyssey, and the New Legend of Zelda game. If they were to release a new Animal Crossing installment, I'd guess late 2018 at the earliest. And, again, if they do release a new game, I'd love to see a revival/remake of the first game for the GameCube with bits of New Leaf added in, or maybe even a sequel to New Leaf. Some of the things I'd like to see return are RVs, Main Street, diving and badges, and anything else is just an extra bonus to me.