From Twitch description:
Hosted by Sean ‘Day[9]’ Plott, the PC Gaming Show will take place at the Belasco Theater in Los Angeles on Tuesday, June 16, 2015. Doors open at 5pm PT, and the show starts at 6pm PT.
Participants include:
AMD
ArenaNet
Blizzard Entertainment
Bohemia Interactive
CCP Games
Cliff Bleszinski
Cloud Imperium Games
Creative Assembly
Dean Hall
Devolver Digital
Frictional Games
Fullbright
Paradox Interactive
Pixel Titans
SCS Software
Splash Damage
Square Enix
Tripwire Interactive
Xbox
AND MORE!