Nintendo Insider and blogger Emily Roger best known for the Rocket Era forums know that Nintendo has two unlocked ports in the development of Nintendo Switch. You can guess which ones. He also says that in the same thread Nintendo will focus more on Animal Crossing: New Horizons this first quarter. That would mean that the traditional start of the year at Direct would be the targeted elimination of Animal Crossing.
I can also confirm that Nintendo has (at least) two ports that can be reported on the Wii U. It's not hard to guess because there aren't many Wii U games left.
