The official BlizzCon website revealed today that attendees of this year's BlizzCon will have the opportunity to participate in a test event for an as-yet-unnamed Blizzard game. The official BlizzCon website states that BlizzCon exhibitors will receive "test serial numbers for new Blizzard games that have not yet been announced."
BlizzCon, sponsored by Blizzard, will take place in Anaheim on August 3-4. Oh, and just to remind you, the BlizzCon admission ticket costs $100. The price of playing Blizzard's test games is not small.