http://www.techradar.com/news/nintendo-is-ramping-up-switch-production-next-year

It would appear the Nintendo Switch is a hit, and in fact Nintendo is so confident in the chances of its ongoing success that it's planning to ramp up production of the gaming device next year - perhaps putting out as many as 30 million Switches during 2018.

That's according to anonymous sources speaking to The Wall Street Journal, who say that 25-30 million Nintendo Switch devices are planned for the next financial year - which starts in April 2018 - and that figure could go even higher depending on consumer demand.