WoWGuru claims to have received information from a former Blizzard employee that the studio will be unveiling Diablo 3 at BlizzCon. Said to be a Massively Multiplayer Online much like World of Warcraft, the concept being Hell invading Heaven, Darkness taking over Light, and it will include Guild Housing. That same source also revealed that Starcraft 2 has been in development and Diablo is being worked on for the X360 and not World of Warcraft as was previously rumored. We will know more tomorrow when Blizzard officially kicks off BlizzCon at the Anaheim Convention Center