According to Gamesradar, Nintendo Switch Sports may have entirely new mini-games – basketball and dodgeball.
This is what Twitter users @Wipeoutjack7 found from game data, both of which contain online and offline versions, but there is no relevant indication of whether this content will be unlocked later or launched in the form of DLC.
At last month's Nintendo Face-to-Face Conference, the game unveiled its first trailer, when we learned that the sequel to Wii Sports would include six games: tennis, bowling, kendo, soccer, volleyball, and badminton. Subsequently, it was also revealed that Golf will be added to the game in the form of a free update.
It is worth mentioning that Twitter user @Oatmeal Dome said that he did find "text" related to basketball and dodgeball in the game, but there was no data or code, he only existed in the form of text. Thus there is also the possibility that these two movements originally existed, but were deleted for some reason.