In addition to announcing a new expansion pack for World of Warcraft this weekend, Blizzard revealed the collector’s edition for the developer’s early 2012 action RPG, Diablo III, while releasing a jaw-dropping new cinematic trailer and detailing how certain members of its community will automatically get the game for free.

Let’s start with the collector’s edition of Diablo III, which contains the following items:

• Diablo Skull and 4GB USB Soulstone
  • Shackle your PC into unholy slavery with this 4GB USB soulstone and Diablo skull base. The USB also includes full versions of Diablo II and Diablo II: Lord of Destruction so you can retrace the sinister path of the Dark Wanderer once more.
• Exclusive In-Game Content
  • Diablo III - Aesthetic Artifacts - Call forth glowing angel wings, unfurl an exclusive banner, and dye your armor sets with the Bottled Cloud or Bottled Smoke items.
  • World of Warcraft - Fetish Shaman Pet - Journey throughout the World of Warcraft with the fetish shaman at your side.
  • StarCraft II - Battle.net Portraits - Display your status as a hero of the mortal realms with an exclusive army decal and three Diablo-themed Battle.net portraits.
• Behind the Scenes Blu-Ray/DVD Set
  • Meet the teams behind the creation of Diablo III with this exclusive Blu-ray/DVD two-disc set. Enjoy over an hour of interviews detailing how the world of Sanctuary came together from the combined efforts of artists, writers, programmers, designers, musicians and animators.
• The Art of Diablo III
  • Delve into the game’s stunning artistic development with this 208-page art book, which catalogues countless pieces, from early concepts to final 3D renderings.
• Diablo III Soundtrack
  • Experience twenty four original pieces from the Diablo III soundtrack on CD and deepen your music collection with a sound as timeless as the Eternal Conflict itself.

You can see additional images of the Diablo III Collector’s Edition at the official product page over here.

If you’re keen to get Diablo III for free, however, if you’re a 12-month World of Warcraft subscription holder with the WoW Annual Pass, and for a limited time only, you’ll be able to get the following:

• Diablo III FREE – Download the digital version via Battle.net for free when the game launches early next year. This is the full game, not a trial edition.
• Tyrael’s Charger WoW Flying Mount – Ride for the Archangel of Justice on all current and future characters on a single World of Warcraft account. Tyrael’s Charger will arrive via in-game mail with the upcoming launch of patch 4.3.
• Access to the Next WoW Expansion Beta Test – Get a guaranteed spot in the beta test for the next World of Warcraft expansion (at a time to be announced in the future).

And last of all, you can watch that awesome new CG cinematic for Diablo III – truly amazing stuff, but what else would you expect from Blizzard?

Diablo III Black Soulstone Cinematic

Diablo III is due for release sometime in 2012.