https://www.polygon.com/2018/3/8/17098114/captain-toad-treasure-tracker-nintendo-switch-release-date

Captain Toad: Treasure Tracker is making the journey from Wii U to Nintendo Switch, Nintendo confirmed today during its Nintendo Direct presentation. The Switch version will include new levels based on Super Mario Odyssey, a game in which Captain Toad makes a number of guest appearances.

Nintendo described the new Treasure Tracker levels based on Super Mario Odyssey as “miniature courses,” so expect some smaller puzzle-level experiences. The Switch version will also feature a two-player mode: “While one player controls Captain Toad, the other can assist with things like turnip cover fire,” Nintendo said.