In this week's Starcraft 2 Q&A, Blizzard reveals a few changes made to the current build. The abilities of the Protoss Stalker and Phoenix use a cooldown system instead of energy. The Thor no longer serves as an anti-air unit, leaving the Viking to shine in the field.
Templars lost the Hallucination ability and gained Anti-gravity instead. Starcraft 2 gains the Warcraft III feature: onscreen Idle-workers icon alert.