It seems Nintendo plans to add new SNES titles including new console emulators for the Nintendo Switch Online service.

According to Kapu, a dataminer, the latest Switch update apparently added SNES games to be included for the service in the future. All in all, 22 classic SNES titles have been found:

https://twitter.com/KapuccinoHeck/status/1084281635586146304

• Super Mario Kart
• Super Soccer
• The Legend of Zelda: A Link to the Past
• Demon’s Crest
• Super Mario World 2: Yoshi’s Island
• Stunt Race FX
• Kirby’s Dream Course
• Pop’n Twinbee
• Star Fox
• Contra III: The Alien Wars
• Kirby Super Star
• Super Ghouls ‘n Ghosts
• Kirby’s Dream Land 3
• Super Metroid
• Super Mario World
• Pilotwings
• F-ZERO
• Star Fox 2
• Super Punch-Out!!
• The Legend of the Mystical Ninja
• Super Mario All-Stars
• Breath of Fire II

Here’s the strings as proof.

In addition, @OatmealDome shared he found more Nintendo classic console emulators on the NES Switch app. Four emulator types have been datamined:

• Kachikachi (NES Classic)
• Canoe (SNES Classic)
• Hiyoko (???)
• Count (???)

This might mean Nintendo could be planning to roll these out to spice things up for the service in the future.

I was looking through the NES Switch app with @KapuccinoHeck and @Simon1844. I found four emulator types:

Kachikachi (NES Classic)
Canoe (SNES Classic)
Hiyoko (???)
Count (???)

This could mean there will be two new Classic consoles and/or three new consoles for Switch Online.

— OatmealDome (@OatmealDome) January 13, 2019