I'll try my hand at predictions. Probably included too much / am off, but here they are:
Universal Titles
- Arms version 3.0 (release date)
- Fire Emblem Warriors (new character)
- L.A. Noire (trailer)
- The Legend of Zelda: Breath of the Wild DLC #2 (release date)
- Metroid Prime 4 (trailer)
- Omega Force on Switch: Dynasty Warriors 8: Empires, Samurai Warriors: Spirit of Sanada, and Warriors Orochi 3 Ultimate (trailer)
- NEW: Platinum Games (Bayonetta Collection, The Wonderful 101, something)
- Pokken Tournament DX (launch promo)
- Project Octopath Traveler (trailer)
- Splatoon 2 version next (release date)
- Super Mario Odyssey (more info, footage)
- Virtual Console
- Xenoblade Chronicles 2 (release date)
- Yoshi for Switch (title, release window)
- Apollo Justice: Ace Attorney (trailer)
- Kirby Multiplayer Action Game (title, release window)
- Metroid: Samus Returns (launch promo)
- Pokemon Ultra Sun / Moon (more info, footage)
Western-Only Titles
- The Elder Scrolls V: Skyrim (release date)
- NEW: Fallout 4
- Harvest Moon: Light of Hope (release date, trailer)
- Etrian Odyssey V (trailer)
- Layton's Mystery Journey: Katrielle and the Millionaires' Conspiracy (trailer)
- Radiant Historia: Perfect Chronology (trailer)
- NEW: Yo-kai Watch 3 or Yo-kai Watch Busters 1
Japanese-Only Titles
- Atelier Lydie & Soeur (trailer)
- Fast RMX (launch promo)
- Sumikko Gurashi: Sumikko Park he Youkoso (trailer)
- Attack on Titan 2: Future Coordinates (trailer)
- NEW: Etrian Odyssey Next
- Medabots Classics (trailer)
- Shin Megami Tensei: Strange Journey (trailer)
- Yo-kai Watch Busters 2 (trailer)