https://thenextweb.com/gaming/2019/01/14/nintendo-switch-online-snes-games-classic/

Over the weekend, an intrepid dataminer found evidence in the recent Nintendo Switch update to suggest games from the company’s Super Nintendo era might soon be available to Switch Online subscribers.

The dataminer in question, KapuccinoHeck, spotted clues in the Switch’s code which suggests a SNES emulator could be on its way to Nintendo’s Switch Online subscribers, to complement its library of existing NES games. There’s also some evidence to suggest more emulators could be on the way in future, though it’s very tentative.