A few years back, thatgamecompany said they were planning to go multiplatform with future projects. Their first proof of that was Sky: Children of the Light, which released on mobile devices. There have been strong hints that the game would go to other platforms, and in a recent interview with MCVUK, thatgamecompany co-founder and creative director Jenova Chen seemed to indicate the title is on its way to Switch.
“… But our game runs on iPad, on PC, it will run on console in the future. … In the future, it’s going to cross all platforms. And whether you have PlayStation or Switch we will support crossplay.”
It's not a 100% percent confirmation, but it certainly looks good. We'll bring you the official announcement if/when there is one.