Hey there everyone.  I just noticed that Blizzard has released 2 new patches for the SC2 beta, so here are the changes:

Patch 3:

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.

Patch 4:

General

• Korea
  • Added support to display the game rating information on the F10 in-game menu within the beta.

All of this information came directly off of blizzard’s site and can be viewed here:

http://forums.battle.net/thread.html?topicId=23094049316&sid=5000