So Emily claims it's called "Mario + Rabbids Kingdom Battle?" Do you think that'd be pronounced "Mario and Rabbids," or literally "Mario plus Rabbids?"
Assuming her rumors, and other rumors pan out, maybe we could be looking at the following for Switch's first year (in terms of notable first- and third-party games note this list is not comprehensive):
March: Breath of the Wild / Super Bomberman R
April: Puyo Puyo Tetris / Mario Kart 8 DELUXE
May: Minecraft / Ultra Street Fighter II
June: ARMS
July: Splatoon 2
August: Mario + Rabbids: Kingdom Battle
September: Fire Emblem Warriors
October: Pokemon Stars
November: Mario Odyssey / Smash Bros for Switch
December: Xenoblade Chronicles 2
This is exactly what I'm thinking could be the lineup. Although I don't think Smash Bros. will be this year. I think BotW DLC release in November though. Switch will have enough AAA multiplayer franchise releases in the first year with MK8D, Arms, Splatoon 2, and Pokémon alone. This is what I could see for 2018 based on their teams and content released in the past:
February: Super Smash Bros.- content from both versions of 4, new characters, stages, items, other content, additional modes, expanded options in different modes, etc.
March: Fire Emblem Switch/3DS
April: Pikmin 4
May: Retro Studios game
June: Mario Party
July: Pokken
August: Wii U remaster such as DK:TF, Captain Toad, Bayonetta 1+2, etc. outsourced to a different team such as Tantalus or Monster Games.
September: Mario Maker
October: 2D Zelda
November: Animal Crossing
2019: Paper Mario, Luigi's Mansion (Next Level Games), 3D Mario 3DW-style title, new ips from EAD studios, Nintendo platformer spinoff from Good Feel, Hyrule Warriors 2, Pokemon Gen 8.
This also ignores the possibility of DLC for MK8D, ARMS, Splatoon 2, Fire Emblem Warriors, Super Mario Odyssey, Smash Bros., etc. Not too mention I think Switch has a few big third party games lined up.