Note that if you are already using patch 1.9.1 with no problems you don't need to install v1.9.2.
CHANGES FROM RETAIL VERSION 1.9.0:
- Match difficulty is now optimized by the user and can be Easy, Normal or Hard. Note that the default in version 1.9.0 is now hard and that normal is the default.
- Launcher is added so that the user can:
Change AI difficulty
Enable/Disable Match videos
Enable/Disable Intro videos
Enable/Disable Full screen mode