Blizzard issues a brand new patch for their strategy, StarCraft 2: Wings of Liberty. The developers incorporated a huge amount of changes this time around and here are some of them (the rest are available with the patch notes):

General

• 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 open up a list of available friends, party members, chat channels, and other players within your current game.
  - Added Battle.net option to auto-join previous private channels.
  - Added Battle.net option to prevent chat channel text from appearing in in-game chat display.
• A new Master League has been added! This league now represents the highest tier of players.
• Customizable Hotkey Support has been added.
• Stalemate Detection has been added. This will end the game in a tie for all remaining players if no players have income, production, or destroyed structures for three consecutive minutes. A countdown timer will now appear when the game detects this scenario.
• An Extreme graphics option is now available. Players can now configure screen space ambient occlusion.

Download the StarCraft 2: Wings of Liberty patch 1.2.0 here.