So Blizzard is gearing up to send out invites for the StarCraft II: Heart of the Swarm beta, which will apparently go live “soon”.

Heart of the Swarm is expected to make a series of meaningful changes to the game’s multiplayer component. The beta will focus on this element, and will not include any of the single-player experience.

The new units confirmed (at this stage, at least) for Heart of the Swarm include the Terran Widow Mine, Terran Battle Hellion, Terran Warhound, Protoss Tempest, Protoss Oracle, Protoss Mothership Core, Zerg Swarm Host, and Zerg Viper.

If you want in on the Heart of the Swarm beta, make sure that you have selected the “Hell Yea!” option in your Beta profile settings, which can be found in your Battle.net account settings.