They did, when mentioning on the subject of Mario Kart with Labo, they more..alluded towards that notion.
Whether it's paid content or free, who knows.
My guess for the year..
Spring:
Headlining Title - Yoshi
Secondary Title - Wii U Port (Wonderful 101)
Summer:
Headlining Title - Animal Crossing
Secondary Title - Daemon X Machina
Fall:
Headlining Title - Fire Emblem: Three Houses
Secondary Title - Luigi's Mansion 3
Winter:
Headlining Title - Pokemon Gen 8
Secondary Title - Bayonetta 3
I'm also guessing, Switch Mini is indeed happening; and it'll be aimed for the Fall to be a handheld version of the console, for Pokemon's big push.
I'd also be curious, to if Ubisoft France debuts the Mario + Rabbids sequel, considering it'd be a 2 year time-frame for development.