User blog comment:Jimeee/Skyrim 1.9 beta update adds Legendary difficulty and raises level cap (Updated Apr 8th)/@comment-86.139.96.68-20130312151023/@comment-74.134.148.245-20130313204950

It is rumored/confirmed that "Redguard" is the title of the next DLC. It was leaked on Steam: to be released June 9.