During the latest Nintendo Direct came the announcement that N64 and Sega Genesis/Mega Drive games will be coming to the Switch Online service as part of the ‘Expansion Pack’ service next month.
Of course, this means new controllers and this includes the Nintendo 64 controller and a three-button Sega Genesis controller. NSO members in Japan, however, will be getting a different option, as they will be able to purchase the six-button version of Sega’s wireless controller.
https://twitter.com/Nintendo/status/1441166016604606472
A reminder to all that the Switch is region free