Nintendo have revealed their plans for E3 2017 with three different events taking place. On June 13th at 9am PT/12pm ET, Nintendo will host their showcase event which is called “Nintendo Spotlight” in the description for the event it states that Super Mario Odyssey will be shown further along with other Nintendo Switch games for 2017.
Straight after Nintendo Spotlight has finished, gameplay for Nintendo Switch and Nintendo 3DS games will be shown during a live stream which is known as “Nintendo Treehouse Live” and the final event will be for tournaments of upcoming Nintendo Switch games like Splatoon 2 and ARMS.
Here’s the official tweet and announcement.
— Nintendo of America (@NintendoAmerica) May 11, 2017