Nintendo just announced Splatoon 2 for Switch.
Splatoon 2 will have local and online multiplayer. It will also have various input options like the original. You can use joycons or pro controllers and even use gyro controls. Splatoon 2 will be getting content updates after launch and there will be many in game events as well.
Splatoon 2 is scheduled for Summer 2017 on Nintendo Switch.