Protoss: -Dark Toss added -Knight added -Zealot are stronger and cheaper -The warp gate change the zealot to a stronger Zealot (125 minerals and 25 gas)
Terran: -Mercs replace all normal units -speed upgrade for the rines and rauders
Zerg: -4 zerglinge at once -zergling speed and attackspeed increased -roaches more life but weaker -mutlisk more HP -hunter-killer for hydraklisk -lurker = Hydralurker =)