What's new in 1.9.1
Mouse steering improvements (Controls page, launcher, [Input] mouse_steer) works like aiming with the ranged button does (as in the prologue, where Isildur has no bow): hold W (or push the stick up) and the mouse is the stick.
Sauron's sprint is removed, with its option: Shift and the left stick click are the left stick click again.
Extra heroes: the Uruks rock throw for level three has been restored (and their fire upgrades), and they do damage to the Watcher.