These are patch notes for next week (today is 1/4/13 )
Fixed a bug that caused players to take damage when walking down inclines.
Fixed bug that if logged out in air - you will not be able to get back into game
Increased the server shutdown timer to 5 min
Optimized shadow rendering for better performance
Optimized scene rendering for rendering
Shadow quality on ultra settings was improved
Other very technical rendering optimization for greater FPS
Optimized zombie rendering
If you have recent video card and start game for the first time, it will not default into low quality, and instead will default into appropriate quality settings depending on how powerful your video card is