In addition to adding Legendary Skills and the new Legendary difficult setting, the update adds a number of bug fixes
Bethesda Softworks has announced that a new automatic title update is available for the Xbox 360 and PS3 versions of The Elder Scrolls V: Skyrim, adding Legendary difficulty setting. Also, skills of 100 can be made Legendary. This will reset the skill to 15, return its Perks and allow the skill to affect leveling again. This effectively removes the overall level cap.