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 The three races have been replaced by three hybrid races.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.
I was kindy suprised by this. In V1.2 I gave the Hellflury Mech and new ability which allows it to 'destroy' a player owned unit to grab its weaponry/technology, giving it the ability of the other unit (e.g. sacrificing the invisible Phantom ship gives the mech invisibility). It appears the AI actually uses this ability in a smart way :)!