The Nintendo Switch has sold over 15 million units in Japan as of the month of September. This data has been gathered over the approximate time of three years and six months, according to Famitsu. [Thanks, Famitsu!]
Again, these numbers are purely in relation to domestic sales in Japan. Other information regarding how many units the Switch has sold cumulatively internationally has not been listed or disclosed in the aforementioned article. Estimated sales for the Nintendo Switch are 15,073,025 units.
Additionally, Famitsu included cumulative sales for Animal Crossing: New Horizons in the article. As is stands, New Horizons has sold over 5.6 million units domestically.
This news comes at the perfect time. Especially with Nintendo reportedly increasing Nintendo Switch production. Production had initially slowed due to situations surrounding COVID-19. However, Nintendo is planning to increase production to 30 million units for this fiscal year.
In addition to this, new first party titles for the Nintendo Switch have been announced. This includes Hyrule Warriors: Age of Calamity, which will serve as a prequel to The Legend of Zelda: Breath of the Wild. Other news regarding Switch titles includes the recent announcement of the delay of No More Heroes 3: Travis Strikes back.