Features and improvements:

* New! Join in progress support means you can join a friend's multiplayer game at any time
* New! A public match server browser allows you to see all multiplayer games in progress
* New! Game has been optimized and now supports up to 10,000 unique units in single player
* Better Steam multiplayer integration and friend joining (fixed several issues)
* Improvements and bug fixes in UI, including the flickering mouse some people were getting