Blizzard has just released patch 1.5.4 for StarCraft II: Wings of Liberty. The launcher will automatically download this patch and update the game to the latest version, so there's no need for third-party downloads.
According to the official changelog, there are only a few improvements included in this patch, though it contains lots of bug fixes, such as the ones detailed below:
- Fixed a rare issue that caused prevented players launching the patched client without an Internet connection from accessing features in Offline Mode;
- Fixes an issue preventing some custom minimap icons from displaying properly in Arcade games.
A Protoss-related issue has been addressed as well, so structures built within the power field of a Pylon of an ally who disconnects should no longer remain powered when that Pylon is destroyed.
The trigger module in the game
's editor should no longer stall for long periods of time when adding or removing actions.
Last but not least, several improvements have been made to correct an issue where player would load into a game slightly later than other players. More details are available here