The upcoming Nintendo Switch event will include lots of news on the console, new games, and most likely new ports. Laura Dale who has been reliable for leaking correct Switch news has said that Rayman Legends will be ported to the Nintendo Switch.
It will be announced at the presentation and it will come out during Q2 of 2017.

Rayman Legends Switch Port is being announced during Jan 12 event for Q2 release.

— Laura Kate Dale – Mastodon "@LauraKBuzz@tech.lgbt" (@LaurakBuzz) January 3, 2017