The game title is simply “Yoshi” at this point (confirmed to be working title), and his new adventure takes players to a cute, cardboard, diorama-style platforming world.
Yoshi for Nintendo Switch – Official Game Trailer – Nintendo E3 2017:
Yoshi heads on a new adventure in this new action platforming game coming to Nintendo Switch. Explore a great big world decorated like a miniature diorama, look for items throughout the stages and team up with a friend in a new art style for the franchise. Coming 2018!