StarCraft II: Heart of the Swarm is an upcoming expansion pack to the military science fiction real-time strategy game StarCraft II: Wings of Liberty and part two of the planned StarCraft II trilogy. Part three is titled Legacy of the Void.
The expansion will include additional units and multiplayer changes from Wings of Liberty, as well as a continuing campaign focusing on the Zerg species. It will span approximately 20 missions and will be priced as an expansion set. Heart of the Swarm is currently slated for a release in the first half of 2013.
STORY: The Queen of Blades is gone. On the hellish planet Char, Jim Raynor harnessed the power of an ancient Xel’Naga artifact in a desperate bid to stop the zerg Swarm from overrunning the Koprulu sector, and the artifact restored Sarah Kerrigan to her human form. Without their queen to guide and unify them, the Swarm has fractured into several broods scattered throughout the Koprulu sector. One of the greatest threats to the galaxy has been neutralized... or so it seems.