The collector's edition will include a copy of the game, a collector's edition soundtrack, a two-disc behind-the-scenes DVD and Blu-ray set, an art book and a 4GB USB flash drive styled after the soulstone in Diablo III.
The USB flash drive will come with a holder modelled after Diablo's skull. The full game of Diablo II and its expansion Lords of Destruction will be on the USB flash drive.
The collector's edition will also include in-game content for other Blizzard titles. Players will receive the aesthetic artifacts in Diablo III, the fetish shaman pet in World of Warcraft and exclusive Starcraft II Battle.net profile portraits.
Today at Blizzcon 2011, Blizzard also announced an annual pass for World of Warcraft, which will give players a full free copy of Diablo III.
Diablo III has yet to be given a release date on PC and Mac.
> World of Warcraft receives 'Mists of Pandaria' expansion