If this is a new smash than the holiday title will be sadly just smash. My dreams of a real game like metroid or pkmn just died.

@PAOerfulone
Thank you for the list. I am loosing the overview of the release of all the games.

I don't think that this was the last Direct until e3. I am expecting a shorter one end of April/beginning of May.

You're welcome!

We could get another one, but it'll likely be either a Mini Direct focused on indie games or a Game-Specific Direct, but the only game that justifies the latter that's releasing between now and E3 is Labo.

Think September is too early for Smash, Holiday 2018 would be my guess

Pokemon for Switch will probably be 2019, so another 3DS pokemon then?

You’re list is actually pretty good, I must admit. I think just add in one or two games to be announced at E3 and you’re spot on.

2nd half of 2018 will actually have heavier hitters than 2017. And this year will have more games overall too. Impressive.

2017

1-2-Switch

Zelda

Mario Kart 8 Deluxe

Arms

Splatoon 2

Mario + Rabbids

Pokkén

Fire Emblem Warriors

Super Mario Odyssey 

Xenoblade Chronicles 2

2018

Bayonetta 2 + 1

Kirby Star Allies

Nintendo Labo 

Hyrule Warriors DE

DKCTF

Mario Tennis Aces 

Captain Toad TT

Yoshi

Fire Emblem

Animal Crossing

Super Smash Bros.

I admit, Smash being the big holiday title is a little more likely than being a September title. I just think that if they really want to make sure that their Paid Online Service kicks off to a Fantastic Start, they need to have Smash Bros. be the game it launches with. That's literally a No Brainer. 

And yeah, it's looking more and more likely that Pokemon isn't coming until at least 2019, which I am thankful for.

Yoshi in August

Smash Bros in Septmber, same day as the online service

Pokemon in November

Fire Emblem in December

I bet Animal Crossing, Bayonetta 3, and Prime 4 are 2019

March- Kirby
April-Labo
May-Donkey Kong, Hyrule Warriors
June- Mario Tennis, Sushi Strikers
July- Octopath Traveler, Captain Toad
And now we begin pure speculation
August-Yoshi(I like the name Yoshi's Flip Side)
September-Smash Bros, to launch the online service
October-Fire Emblem
November- Retro's new game(StarTropics?)
December- No idea

edited some mistakes

Sushi Strikers was already confirmed for June and Captain Toad for July.

Yes,  made a mistake. Should have checked dates before posting