Take with a grain of salt, since another review on the site claimed Retro Studios was in trouble and it wasn't. But anyway, I was on a Discord server and someone on there found this GlassDoor review of Retro Studios and on it it says:
"There was a cancelled game on Switch that was in Development since 2015 but was later cancelled in September 2018. It was meant to be a racing game based on Star Fox."
If you recall, there was a rumor of a Star Fox Racing game on Switch called Star Fox Grand Prix.
https://www.glassdoor.com/Reviews/Employee-Review-Retro-Studios-RVW23690077.htm
"There was a cancelled game on Switch that was in Development since 2015 but was later cancelled in September 2018. It was meant to be a racing game based on Star Fox."
If you recall, there was a rumor of a Star Fox Racing game on Switch called Star Fox Grand Prix.
https://www.glassdoor.com/Reviews/Employee-Review-Retro-Studios-RVW23690077.htm