This method has been used commonly by Blizzard for World of Warcraft but it is the first attempt for Starcraft II.

Patch notes are down below

General

Battle.net

• Battle.net Chat Channels have been added:

-- Players can now join others in both public and private channels.

-- Added in-game chat bar command to whisper to other players. Using the /w command will pop up an auto-complete list which includes: friends, party members, chat channels, and other players within your current game.

• Added a Battle.net option to auto-join previous private channels.

• Added a Battle.net option to prevent chat channel text from appearing in the in-game chat display.

Custom Maps

• Map makers can now use custom UI layout files to create new UI or override existing game UI.

Gameplay

• Stalemate Detection has been added:

-- The game will end in a tie for all remaining players if no players have income, production, or destroyed any structures for three consecutive minutes.

-- A countdown timer will now appear when the game detects this scenario.

• Several help dialogue and tech tree improvements have been made:

-- In-game help is now available in Battle.net.

-- The help dialog’s tech tree has been improved.

-- Unit information in the help dialog now displays abilities and upgrades.

• Selecting different units in quick succession will now fade out existing replies to play the most recent reply.

• When selecting a Vespene Geyser, the number of current harvesters will be displayed in the info panel.

Graphics

• An Extreme graphics option has been added:

-- Players can now configure screen space ambient occlusion.

-- Unit information in the help dialog now displays abilities and upgrades.

Interface

• Customizable Hotkey Support has been added.

• Mouse buttons can now be bound to the Push-To-Talk hotkey.

• System Alert panel has been moved to the top of the screen – duration of most system alerts has been reduced.

Added a hotkey to Pause/Resume game for both single-player and multiplayer (Pause/Break key).

• Added a toggle button to the in-game replay panel to show or hide duration information.

• Added a hotkey indicator option to show the primary hotkey on top of command buttons.

• Added an option to disable any error sounds. The Response Sounds checkbox now controls whether unit-specific audio is used for error sounds instead of a generic buzz.

Leagues and Ladders

• A new Master League has been added.

-- This league now represents the highest tier of ladder players.

Replays

• Several Save/Replay File dialogue improvements have been made:

-- Prints current directory name above file list.

-- Added sort order icons to Name and Date columns.

-- Added the ability to rename.

-- Added filters for Autosave and Unsaved.

-- Added an option to permanently save all replays. Checking this option will mark all unsaved replays as being saved.

• Camera following behavior for observers and replays has been improved.

Balance

• PROTOSS

-- Hallucination research time decreased from 110 to 80.

-- Observer

Cost decreased from 50/100 to 25/75.

-- Phoenix
Build time decreased from 45 to 35.

-- Void Ray

Now deals 20% more damage to massive targets.

Flux Vanes speed upgrade removed.

• TERRAN

-- Bunker

Build time decreased from 35 to 30.

This is only a temporary change for the patch 1.2.0 PTR.

-- SCV

Repairing SCVs now assume the same threat priority as the unit they’re repairing.

SCV construction movement made more consistent.

• ZERG

-- Infestor

Fungal Growth no longer affects air units.

StarCraft II Editor

• Map locale management has been added.

• Further editor tips and hints have been added.

• Copy/Paste support has been added to the upgrade editor.

• Modifed the Locales dialog (also in the Locale sub-menu) for adding or removing text locales.

• Locale sub-menu is now available in Map/Mod menu for changing the active text locale for the current document.

• The game will now properly find custom imported files within mods.

• Maps can now depend on even more mods.

• Mod Info dialog is now available from the Mod menu for more easily changing mod name and description text.
• Change Focus commands are now available in the Trigger module View menu for switching input focus directly to different areas.

• Font Style Files can now be added to Mods and Maps using the FontStyleFileArray field in GameUIData. Existing styles can have their individual attributes overridden or entirely new styles can be added.

• UI Layout files can now be added to Mods and Maps using the CustomLayoutFileArray filed in GameUIData. Most existing frames can be modified or overridden and entirely new templates can be added, which can be created from the Dialog system within the Editor.

• Dialog Items can now be hooked up from already existing frames within a created Panel.

• Attributes and values can now be hidden in the game lobby, configured through Game Variants.

• Editor Tips dialog in the Help menu (and optionally on start up) improved with tips for using the editor effectively.

• Created a new type of Dialog Item called Panel. Panels are containers for other dialog items to help with grouping and hierarchy.

• The water editor layout has been improved.

• The mouse wheel now scrolls the control under the cursor.

• Copied doodads now retain their height offset.

• Effect offsets can now optionally contain a Z component.

• Attribute and Veterancy behaviors now normalize vitals when new levels are applied.

• Mouse clicks and highlights are now allowed while in relative camera mode.

• Edit boxes are now available for trigger dialogs.

• Right clicking an item in an inventory will now have the icon appear immediately next to the cursor.

• Behaviors can now be replaced by either the shortest duration (the original method) or by farthest distance.

• Behavior abilities can now properly charge the player using the ability instead of always charging the owner.

• New trigger action have been added:

-- Set Visibility Type Of Text Tag, used to control whether fog or black mask hides the tag.

-- Remove Inventory Item, used to instantly remove a requested item from an inventory.

-- Bank Option, used to change options for banks including adding a signature

• New unit properties have been added:

-- Carried Minerals, Carried Vespene, Carried Terrazine, and Carried Custom Resource.

-- Bounty (XP), used to grant experience when a unit is killed.

• New trigger function: Verify Bank, used to verify that a bank’s signature is intact.

• New trigger event: Mouse Moved, sent in response to the mouse being moved in the game world.

• New Effect Used event property: Life, Shields, and Energy changed.

• Added new UI to insert text tags for data references, unit info, and hotkeys.

• Added an effect range to the effect ability to restrict how far away the effect can be placed. This will allow effects to behave like the Stalker Blink effect.

• Added a behavior flag to suppress fidgeting.

• Added a new stalemate melee option to determine whether the stalemate detection checking is enforced.

• Added a new “Creator” player to effects. It will be set to the player issuing an order if available.

• Added a new type of item that can use an effect ability.

• Added a validator that checks to see if a unit can path to a point.

• Added a validator that checks if there is a cliff between two points.

• Added MinimapRenderPriority to CActorUnit and MinimapRenderPriorityList to CActorGlobalConfig. This allows custom map makers to define the render priorities of units on the minimap.