You can now select a unit category with a double left-click
Yankee cavalry behavior is now more predictable
GUI improvements (centered text, more information)
Additional information has been added to cover elements (number of slots, protection bonus)
Camera movement has been reworked (move by bringing the mouse to the edge of the screen, prevents the camera from clipping through scenery, smoother motion)
More frequent auto-save points
No more prestige needed to upgrade units. Units now upgrade automatically based on the number of enemies they eliminate