- Nomad: Gains auto-turret.
- Thor: Replaces the Cobra as an anti-air unit. When it takes lethal damage, it becomes immobile (but can still attack) and must be killed again. SCV can repair it back to full health to regain mobility.
- Cobra: cut.
- Firebat: Produced from the factory.
- Viking: Moves to the StarPort.
- Drop Pods change from simply producing 5 Marines to having to be loaded with specific infantry units.
- Nullifiers: Replace Statis Orb. Gain the Force Field ability. Have Null Void, which stops enemy casters from being able to activate their abilities while within the field.
- High Templar: Gain Anti-Gravity. Can lift anything, units or buildings.
Protoss Buildings and Mechanics:
- Protoss casters can redistribute energy to one another.