today announced that StarCraft II Heart of the Swarm, the first expansion to Blizzards award-winning real-time strategy game StarCraft II Wings of Liberty, will be available in stores and online beginning March 12, 2013. 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. It also introduces several new multiplayer units and features that enhance the acclaimed StarCraft II online experience.