The E3 Nintendo Direct will take place on June 15th

Expect 40 minutes of info about games, most of which will be released this year.

Nintendo may have confirmed its absence from E3 2023, more companies to follow suit: Here's why - Times of India

Nintendo E3 2021 Direct + Treehouse Live, June 15th. 9am PT, 12pm Eastern, 5pm UK (~40 minutes for Switch games “mostly releasing in 2021) News, Page 22

Nintendo's E3 2021 Direct Confirmed For June 15th

Nintendo's E3 2017 Streams Dated And Detailed - GameSpot

Nintendo Direct, Wikitroid

Nintendo E3 Direct live stream set for June 15 — what we know so far

Nintendo Direct E3 2021 Recap - Witch's Review Corner

Apparently the next Nintendo Direct is coming June 29th. Source Alanah Pearce. : r/PokeLeaks

Nintendo's Direct Presentation “Dominated” E3 2021, With 3.1 Million Viewers At Its Peak – NintendoSoup

Nintendo at E3 2021: News, announcements, trailers and more - Polygon

Nintendo Direct: E3 2018 Announced Worldwide – NintendoSoup

E3 2021 gets own online portal and app for virtual event - CNET

Nintendo Direct E3 2021 Transcript