I was all set up to tell you that this impossible because their tent poles are already set for the next twelve or so months with XB3 in the summer, Splatoon and Pokemon pre-Christmas and BotW 2 next spring or summer. But there's actually a few hidden options here. They could finally unveil what happened to Bayonetta 3, which people continue to insist is on track despite the extremely long dev cycle, EPD 9 (makers of Mario Kart, Arms and Nintendogs) could surprise us with a shock doggo reveal as its one of the few big hitters not to have made it to Switch, and EPD 10 (2D Mario and Pikmin) could have Pikmin 4 or NSMB Switch since its been a few years since MM 2.
And just for the sake of completion, a new 3D Mario is also in development, as is Mario Kart 9 (announced, even) and Metroid Prime 4 by Retro, but none of those fit in the schedule or are even close to completion.