The official Secret of Mana Twitter page posted a short video showing Seiken Densetsu 3 (Secret of Mana 3) playing on the Nintendo Switch.
This has fans extremely excited as its believed that Square Enix could be planning on releasing the game on the Virtual Console. It will also be interesting to see if the game receives a Western release as the game was never released outside of Japan.
We hope to have more information soon.
— 聖剣伝説 -公式- (@Seiken_PR) March 20, 2017