It is weird. Yoshi has pretty much disappeared since its reveal. Just weird hearing next to nothing about it for almost a year 

Maybe Pokemon is coming this year after all, even though I've always felt strongly it's a 2019 title. But if they had both Smash and Pokemon for the Holidays the Switch sales would be insane. Throw in Animal Crossing as well and I'd imagine it would break all time Q4 hardware records. But that would also be overkill, imo, so hopefully at least either Pokemon or AC are saved for 2019. 

To be fair Pokemon from start is stated like 2018. or later release, while for instance Metroid Prime 4 is TBA. We also had few indications that Pokemon could really come this year,  localization is already started few months ago , new trademark...in any case I definitely expecting Pokemon or Animal Crossing this year alongside Smash Bros.

No its not because they are focusing on games that will be out in near future, same could be said for Fire Emblem that's actually announced even before Yoshi, simple reason is why Nintendo didnt show them again because they are most likely titles for second half of 2018. so with they way of managing things there was no reason to talk about them before this years E3 for instance.

If Pokemon is hitting this year then I have to say that I think we're getting something more in line with what the franchise has always been. It's not going to be some big open world with Pokken level graphics. There's no way GF could make that leap and finish it that quickly. It will be more like an HD upgrade of SuMo, otherwise it's gotta be a 2019 release imo.

Looks like it's becoming a regular thing for Yoshi to be announced and disappear, since the same thing happened to Woolly World

I know they've said 2018 or later, but I am pretty certain it's "later".  Going from 3DS to Switch is a big leap in graphics and such.  I think they are going to need more time to get it right.

Rumors be rumors.

I would be extremely surprised if Pokemon came out this year. I think holiday 2019 is the most likely release time for Pokemon. The last thing they want to do is rush their first console pokemon on a super hot system. It's gonna be a big upgrade for the series and they need to get it right.

As the dude said, both AAA third party games and more first party games will be hitting late this year, really from a first party perspective one other major franchise and maybe one or second tier game would be enough considering that apparently several AAA third party games are coming as well. Third party games I'm guessing will be a couple huge old ports and a couple huge new multi-plat games. Overall this would make a very strong second half of the year.

Fortnite, GTAV, COD: Battle Royale are all big 3rd party titles that have been rumored/speculated for Switch.