There was a Nintendo Direct RUMOR that has Splatoon Spin-off as one of the titles, unfortunately, I don't remember where the source of that is. To me, it makes sense that something related to Splatoon is coming out this year, regarding the secret messages of the New Year artwork celebrating 2020 (the ripples of the water), the Valentine's Day artwork (the little 4 on top of the blue) and the Caturday artwork (the 6 on the Octoling's shirt).
Now the reason why the list is credible is the fact that Pikmin 3 Deluxe is on that list of games as well, we see that Nintendo loves to port Wii U games to the Switch, given both Mario Kart 8 and New Super Mario Bros. U both have been ported to the Switch.
Now the reason why the list is credible is the fact that Pikmin 3 Deluxe is on that list of games as well, we see that Nintendo loves to port Wii U games to the Switch, given both Mario Kart 8 and New Super Mario Bros. U both have been ported to the Switch.