It took 10 minutes into the first Direct after the Zelda one to get a Zelda announcement.
http://www.nintendoworldreport.com/news/77200/switch-2-version-of-hyrule-warriors-age-of-calamity-revealed
The last game of the Calamitous 4 Zelda games is also getting a Switch 2 release.
Hyrule Warriors: Age of Calamity will receive a Definitive Edition on February 25, with preorders opening today. Players will be able to use their existing saves and a to-be-determined discount will be provided for owners of the 2020 Switch release.
The Switch version will include all of the content in the game's 2021 Expansion Pass, as well as enhanced framerate and resolution.
EDIT 6:55pm EDT: The game's eShop page is reflecting a 50% discount for owners of Age of Calamity on Switch (US$59.99 MSRP down to $29.99), which makes it the most expensive Switch 2 upgrade Nintendo has ever offered - possibly due to the Japanese version being published by Koei Tecmo, who traditionally do not offer upgrades for cross-gen releases at all.