Justin: Blizzard has formally announced the release date and collector’s edition and digital deluxe edition details for SC II:Heart of the swarm.

The Collector’s Edition includes the full version of the game on a DVD-ROM and contains the some exclusive bonus items, in addition to the content from the Digital Deluxe edition:

• Behind-the-Scenes DVD and Blu-ray: Immerse yourself in the StarCraft universe with developer commentary, interviews with voice actors, and an in-depth historical retrospective on StarCraft’s eSports legacy narrated by key members of the community.
• Collector’s Edition Soundtrack CD: Enhance your Heart of the Swarm musical experience with this collection of more than a dozen tracks from the game.
• Heart of the Swarm Hardcover Art Book: This 144-page tome features never-before-seen art from the expansion, including early concept sketches and meticulous 3D renderings.
• Zerg Rush Mousepad: This Collector’s Edition mousepad depicts the Terran Dominion holding out desperately under the onslaught of the Swarm.

The Digital Deluxe version  includes a digital copy of the expansion along with some in-game bonus items:

• StarCraft II Torrasque: Crush the enemies of the Swarm with the indomitable Torrasque, a fearsome new look for your zerg Ultralisks.
• StarCraft II Battle.net Portraits and Decals: New Swarm-infested Battle.net portraits and decals help you customize the look of your online profile and in-game army.
• World of Warcraft In-Game Pet: The Baneling companion pet is bursting with enthusiasm and ready to explode onto the Pet Battles scene.
• Diablo III Blade Wings and Banner Sigil: Grow zerg-like wings in honor of the Queen of Blades, and unfurl an exclusive banner sigil to mark your allegiance to the Swarm in Sanctuary.

Not sure on pricing.