Starcraft 2: Heart of the Swarm will be arriving on PC come 12 March 2013. Blizzard has just released the latest trailer for the game and I must say it got me freshly excited for the single-player storyline.

The trailer shows how Sarah Kerrigan is embarking on a path of great vengeance and furious anger. While pursuing her revenge, the Queen of Blades also seeks to reclaim her living empire.

Hero Jim Raynor features of course, refreshing the sub-plot between himself and Kerrigan.

As we expect from Blizzard, the CG visuals are mightily impressive – seeing glimpses of an Ultralisk rampage through human cities brings a ghoulish delight.

Heart of the Swarm picks up the story of StarCraft II where Wings of Liberty left off, focusing on Kerrigan’s quest to reunite the Swarm and exact revenge on Arcturus Mengsk. Over the course of 20 campaign missions, players will follow Kerrigan as she sweeps across the galaxy, incorporating a variety of distinctive zerg species into her brood. Kerrigan will grow in strength from mission to mission, and players will be able to customize her with powerful new abilities, as well as evolve various zerg strains into fearsome new subspecies to suit their play style.

New weapons of war also debut in Heart of the Swarm’s multiplayer, including new units such as Terran Hellbats, Zerg Swarm Hosts, and Protoss Tempests, while certain existing units from Wings of Liberty will be updated with new capabilities. New features will enhance the game experience, including group and clan systems; unranked matchmaking; Global Play, enabling players to battle others in different regions around the world; additional stat tracking; user interface improvements; an enhanced physics system, for more visceral looking battles; multiplayer replays, to watch replays with friends; a leveling system that gives Heart of the Swarm players a new way to earn customization options for their online profiles; and much more.