User blog comment:Jimeee/Skyrim 1.9 beta update adds Legendary difficulty and raises level cap (Updated Apr 8th)/@comment-24.118.33.135-20130310180606/@comment-64.5.139.4-20130312125745

The max level is around 81 1/2. This allows you to reset a skill from 100 to 15 so you can level the skill up which in turn allows you to level up your character more for more perk points and rase your stamina/magicka/health as well