Nerfing Protoss by whole lot, solidly crippling Terran and boosting Zerg. That's Blizzard decision when patching the game.
We really don't know what Blizzard have against citizens of Shakuras but they don't favor them (or think they are overpowered) in StarCraft 2 BETA. Mothership has several modifications, increased her building time, decreased the number of shots she fire and etc. Chrono Boost's duration has been decreased from 30 to 20.
Terrans's did feel less nerfing. Barracks build time has decreased from 65 to 60. Reactor building time has been decreased from 40 to 25. But Raven's Cloak ability no longer requires Fusion Core to research.
Damage of Zerg's Corruptor has been has increased from 12 (+8 massive) to 12 (+10 massive).
No bugfixes in this patch.
Balance Changes
•Terran
•Banshee
•Cloak: This ability no longer requires Fusion Core to research.
•Barracks
•The build time for this building has decreased from 65 to 60.
•Factory
•The build time for this building has decreased from 65 to 60.
•Reactor
•The build time for this building has decreased from 40 to 25.
•Reaper
•The build time for this unit has increased from 30 to 40.
•Nitro Boost: The build time for this upgrade has increased from 90 to 100.
•Starport
•The build time for this building has decreased from 55 to 50.
•Tech Lab
•The build time for this building has decreased from 30 to 25.
•Protoss
•Mothership
•The build time for this unit has increased from 120 to 160.
•The food cost of this unit has increased from 6 to 8.
•The number of shots fired by this unit has decreased from 8 to 6.
•The shield of this unit has decreased from 400 to 350.
•The health of this unit has decreased from 400 to 350.
•The acceleration of this unit has decreased from 1.3125 to 0.3125.
•The deceleration of this unit has increased from 0 to 1.
•Nexus
•Chrono Boost: The duration of this ability has decreased from 30 to 20.
•Zerg
•Corruptor
•The damage done by this unit has increased from 12 (+8 massive) to 12 (+10 massive).
Links
Battle.Net - Source