Terran special proto-units that you acquire through decisions (Hellions/Banshee's, Marauders/Vikings) now properly will upgrade along with the rest of your units.
Terran04a
Fixes a bug that if banshee's destroy the Zerg hive they don't accidentally "rescue" lost Protoss in the woods
Protoss02
Corsairs will now have Disruption Web and Argus Jewel upgrades researched automatically when Zeratul rejoins the base.
Protoss05b
Fixes a bug that didn't remove a temporary model placeholder for Urun during the opening cutscene when he was giving Mohandar the proto-Void Ray.