Blizzard have now released the first expansion for StarCraft II: Heart of the Swarm!
[youtube http://www.youtube.com/watch?v=MVbeoSPqRs4?rel=0]
In this expansion, players help Kerrigan break out of her cell and fight her way through some of the most dangerous worlds of the Koprulu sector, and lead the Swarm to victory..
More details can be found on the official website.