Attendees will include The Behemoth, Bethesda, Bioware, Blizzard, Capcom, CCP Games, EA, Foundation 9, Microsoft, Mythic, Nintendo, NC Soft, Rockstar, Telltale, Turbine, Ubisoft, Upper Deck, Valve, and WB Games.

The organizers have also already lined up several musical acts: Anamanaguchi, Freezepop, JoCo and MC Frontalot, Metroid Metal and Paul & Storm are all set to entertain.

PAX 09 will begin September 4 in Seattle, Washington. Registration has already opened on the official PAX site.