During The Tonight Show with Jimmy Fallon Nintendo of America President Reggie Fils-Aimé had a special guest spot where he showed some pre-released gameplay of Mario Run.
He then showcased something unexpected, The Legend of Zelda: Breath of the Wild running on Nintendo Switch for the first time ever! In it you see some awesome gameplay by Jimmy Fallon and you see Shigeru Miyamoto being a good sport about everything; both of their reactions being priceless.
The game was shown both on the big screen, and on the Nintendo Switch itself. The Nintendo Switch has been confirmed for March 2017.