StarCraft II: Heart of the Swarm is the upcoming expansion for StarCraft II. And as this opening cinematic shows, it starts with a bang.
Heart of the Swarm will be out this March. The next expansion, Legacy of the Void, will be out at a later date.
In case you missed it, check out Kotaku's review of StarCraft II: Wings of Liberty.
StarCraft II: Heart of the Swarm Opening Cinematic [StarCraft@YouTube]