Changes are coming to the multiplayer side of StarCraft II when the game's next expansion, the Zerg-focused Heart of the Swarm, arrives sometime next year. Today, Blizzard offers us our first, unclear look at one of those changes—a new multiplayer unit.

Pictured above in silhouette form is one of the new multiplayer units coming to the Terran faction. Blizzard will continue to tease new units for the Zerg and Protoss on its StarCraft Facebook page, the company says, unveiling "the rest of the new Heart of the Swarm multiplayer units and abilities" at this year's BlizzCon in late October.

StarCraft II: Heart of the Swarm's single-player portion will also undergoing some major changes, which you can read about here.