Frozenbyte is far from done with the Nintendo Switch it seems. A PEGI rating has appeared for Trinelogy, a collection of all 3 Trine titles.
Trine Enchanted Edition released on the Nintendo Switch this past November.
Trine 2: Complete Story and Trine 3: The Artifacts of Power should be coming soon.
But for now it is not sure if they are only coming as single games or even as a bundle.
About Trine 4
Trine 4 has also been confirmed for a Switch release but no further details are yet known.
As for the Trinelogy collection, it is already available to get on Steam (https://store.steampowered.com/bundle/721/Trinelogy/) but it could be hitting Nintendo systems soon.