This is a new take on the traditional Starcraft races. The three races have been replaced by three hybrid races. The Bionics, the Infested and the Void Predators.
Dreadnoughts (in the upper right corner) are combinations of the Terran Battlecruisers and Protoss Carriers. They are armed with a plasma beam cannon and can be upgraded to unleash Interceptors. Powerfull but expensive and slow.