Blizzard is hoping to push the first StarCraft 2 expansion, Heart of the Swarm, out the door during the first half of 2013. Blizzard head Mike Morhaime made the announcement during Activision's earnings call, saying the studio is "working hard towards a first half 2013 launch."

Heart of the Swarm is set to add several improvements to StarCraft 2, including multiplayer progression and new social features.