From Nintendo I'm expecting:
Zelda U
Pokemon U (with NFC figurines)
Miyamoto's new game (probably NFC involved)
Any two of the following given the Wind Waker HD treatment - Eternal Darkness, Paper Mario Thousand Year Door, Wave Race, F-Zero GX
Release dates for Bayonetta 2, Yarn Yoshi, X, SSBU, Hyrule Warriors
Wii Sports Club Boxing and Baseball
QoL
Hyrule Warriors
Sonic Boom
DLC for Mario Kart 8 giving Arenas for Battle Mode, first piece as free DLC the others reasonably priced
Retro's new title, possibly Metroid U or possibly Raven Blade
More collaborations between Nintendo and high profile indie developers similar to the deals with Platinum Games
Monster Hunter 4 Ultimate U
Nintendo have spent $100m dollars on a 'new tech' acquisition but we don't know if it's a device, patent or company. Could be QoL related, could be that we won't see what comes of it for years. They're also rumoured to have bought a new developer for $150m dollars too.