Summer Game Fest 2021 will begin on 11 June 2021 at 2am GMT+8 with a live world premiere showcase event hosted by Geoff Keighley. It will also feature:

• “More than a dozen world premieres and announcements from select publishers”.
• A performance by Weezer of “a brand new, stream safe game soundtrack song that can be freely streamed” without losing monetization.
• A “Day of the Devs” showcase of new independent games with iam8bit, Double Fine Productions, and more.

According to Geoff Keighley, the premiere showcase will be around two hours long and feature more than 12 world premieres.

Probably around 2 hours? 12+ premieres I believe, prob more than that.

— Geoff Keighley (@geoffkeighley) May 19, 2021

Partners for the 2021 edition of Summer Game Fest include:

• 2K Games
• Activision
• Amazon Games
• Annapurna Interactive
• Bandai Namco Entertainment
• Blizzard Entertainment
• Capcom
• Devolver Digital
• DotEmu
• Electronic Arts
• Epic Games
• Finji
• Frontier Developments
• Gearbox Software
• Hi-Rez Studios
• Innersloth
• Koch Media
• Mediatonic
• Microsoft
• miHoYo
• Psyonix
• Raw Fury
• Riot Games
• Saber Interactive
• Sega
• Sony Interactive Entertainment
• Square Enix
• Steam
• Tencent Games
• Tribeca Festival 2021
• Ubisoft
• Warner Bros. Games
• Wizards of the Coast

You can visit the Summer Game Fest 2021 official website here. In the meantime, check out the trailer below: