Soundwave on 02 June 2017
Luigi's Mansion 3 is guaranteed. Nintendo has never not made a sequel to game that sold more than 3 million (non-bundled) that I can think of.
It would also be a good 2018 title for Nintendo ... Pokemon Stars, Animal Crossing, Fire Emblem, Luigi's Mansion 3, maybe a Metroid or Mario Maker Switch would be a very strong 2018 for them.
