A third StarCraft II beta client is now available, bringing the test version of Blizzard's upcoming real-time strategy sequel to version 0.5.0.14219B. The StarCraft II Forums have the patch notes outlining balance changes and bug fixes (thanks StarcraftWire.net). The notes are reproduced below.

Balance Changes

• TERRAN
  
  
  • Engineering Bay
    
    
    • Infantry Armor: The time required for each upgrade has been reduced by 30 seconds, decreasing each upgrade time from 190/220/250 seconds to 160/190/220 seconds.
    • Infantry Weapons: The time required for each upgrade has been reduced by 30 seconds, decreasing each upgrade time from 190/220/250 seconds to 160/190/220 seconds.
    
    
  • Armory
    
    
    • Vehicle Plating: The time required for each upgrade has been reduced by 30 seconds, decreasing each upgrade time from 190/220/250 seconds to 160/190/220 seconds.
    • Vehicle Weapons: The time required for each upgrade has been reduced by 30 seconds, decreasing each upgrade time from 190/220/250 seconds to 160/190/220 seconds.
    • Ship Plating: The time required for each upgrade has been reduced by 30 seconds, decreasing each upgrade time from 190/220/250 seconds to 160/190/220 seconds.
    • Ship Weapons: The time required for each upgrade has been reduced by 30 seconds, decreasing each upgrade time from 190/220/250 seconds to 160/190/220 seconds.
  
  
• PROTOSS
  
  
  • Zealot
    
    
    • The maximum shield capacity of this unit has been decreased from 60 to 50.

Bug Fixes

• Fixed a bug where the Infestor's Neural Parasite ability could cause Reapers to lose the ability to move.
• Fixed an issue that could use an incorrect HDR format on some ATI cards.
• Fixed a crash that could happen on some ATI cards.