If Charles Martinet's IMDB page is to be believed, Super Mario Galaxy 3 and Super Mario Sunshine HD could be in development for the Nintendo Switch.
At the moment of this writing both titles have been removed, but a screenshot of the information can be found below. The former is supposedly in post-production, whereas the second has a release date of 2017:
Charles Martinet has been the voice of Mario and several other characters in the West since the 90’s. Though IMDB pages can be edited at will, it’s interesting that the references to Super Mario Galaxy 3 and Sunshine HD were removed so quickly.
The Nintendo Switch is slated for a release in March 2017. Nintendo will reveal more about its console during a special presentation in January.