Alright so my predictions will be this.
The conference starts out with a trailer for Smash 4 Switch early 2018
After is when Mario O gets its focus for around 10 minutes and November release
First trailer for a new game is Rabbids and Mario after releasing in August or September
Then they will go into Xenoblade 2 for a release month of December
After is a small trailer of Splatoon 2
Then Kirby for Switch(I think it'll be a full on jump to 3D and change the formula like Mario, Pokémon, and Zelda)
After is Skyrim Trailer for August
Other 3rd party ports announced(COD and South Park)
Animal Crossing Switch for Early 2018
3rd party exclusive
Pokémon Stars reveal
End with Retros game.
Sound reasonable?
I'll take all of it, please!