Yeah thats interesting, if I recall they always were saying focus on 2018. Spring, Winter, Holiday...but this time "upcoming games".
For instance:
-2017. September - "focused on games launching next few months"
-2018. March - "focused on games launching this year"
-2018. E3 - "only games launching this year"
-2018. September - "upcoming games"
https://twitter.com/nintendoamerica/status/907242806787403777
https://twitter.com/nintendoamerica/status/971385073898532865?lang=sr
https://twitter.com/NintendoAmerica/status/1037339567630639109
I mean maybe doesnt mean nothing, but I definitely expecting some 2019. announcements in any case (some Q1 or maybe even Q2 2019. announcements).