Heart of the Swarm features a new campaign continuing the epic story of Sarah Kerrigan, Queen of Blades, as she gathers the remnants of the zerg Swarm and plots her revenge against the treacherous dictator of the Koprulu sector, Arcturus Mengsk. Italso introduces several new multiplayer units and features that enhance the acclaimed StarCraft II online experience.

"With Heart of the Swarm, our goal has been to expand on the multiplayer action and cinematic storytelling of Wings of Liberty," said Mike Morhaime, CEO and cofounder of Blizzard Entertainment. "Combined with features like unranked matchmaking and our new leveling system, this expansion elevates the StarCraft II experience for players of all skill levels."

Heart of the Swarm picks up the story of StarCraft II where Wings of Liberty left off, focusing on Kerrigan's quest to reunite the Swarm and exact revenge on Arcturus Mengsk. Over the course of 20 campaign missions, players will follow Kerrigan as she sweeps across the galaxy, incorporating a variety of distinctive zerg species into her brood. Kerrigan will grow in strength from mission to mission, and players will be able to customize her with powerful new abilities, as well as evolve various zerg strains into fearsome new subspecies to suit their play style.

New weapons of war also debut in Heart of the Swarm'smultiplayer, including new units such as Terran Hellbats, Zerg Swarm Hosts, and Protoss Tempests, while certain existing units from Wings of Liberty will be updated with new capabilities. New features will enhance the game experience, including group and clan systems; unranked matchmaking; Global Play, enabling players to battle others in different regions around the world; additional stat tracking; user interface improvements; an enhanced physics system, for more visceral looking battles; multiplayer replays, to watch replays with friends; a leveling system that gives Heart of the Swarm players a new way to earn customization options for their online profiles; and much more.

StarCraft II: Heart of the Swarm will be available on DVD-ROM for WinXP/Vista/Win7/Win8 and Macintosh at a suggested retail price of $39.99 USD. The expansion will also be available digitally directly from the StarCraft II website at an expected price of $39.99 USD.

Blizzard is offering a Collector's Edition of Heart of the Swarm loaded with digital and physical bonus items, available exclusively at select retail stores for a suggested retail price of $79.99 USD. Players will also have the option of purchasing a Digital Deluxe version of the expansion, which will include all of the digital items from the Collector's Edition. The Digital Deluxe version will be available directly from Blizzard via the StarCraft II website at an expected price of $59.99 USD. Players who purchase the standard edition digitally or at retail will have the option to upgrade to the Digital Deluxe version at any time (for as long as the standalone Digital Deluxe version remains available) for an additional $20 USD.

Presales for the standard digital and Digital Deluxe versions of Heart of the Swarm are now available. Players who would like to purchase either version and be ready to play the moment the expansion launches can do so now by visiting the StarCraft II website. For players who prepurchase, the expansion content will automatically be digitally delivered via StarCraft II's streaming launcher prior to the release of Heart of the Swarm. Players who would like to preorder the standard box or the retail-exclusive Collector's Edition can do so by visiting their local retailer.

The Digital Deluxe version of Heart of the Swarm includes a full digital copy of the expansion along with the following 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.

The Collector's Edition of Heart of the Swarm includes the full version of the game on DVD-ROM and contains the following exclusive bonus items, in addition to the content from the Digital Deluxe version:

• 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.