User blog comment:Jimeee/Skyrim 1.9 beta update adds Legendary difficulty and raises level cap (Updated Apr 8th)/@comment-3152761-20130309090320/@comment-3428817-20130310052110

@76.254.53.225: Athletics won't be added in because it was replaced by the Stamina system. And if you want unarmed, don't use any weapons. Currently, there are three different categories, each with a Skill Tree which corosponds with that catagory: Mage, Warrior, and Thief. Unarmed would need it's own skill tree and it wouldn't fit into any of the existing catagories