User blog comment:Jimeee/Skyrim 1.9 beta update adds Legendary difficulty and raises level cap (Updated Apr 8th)/@comment-174.28.183.133-20130414064300/@comment-5469467-20130415072000

I imagine they'll find other glitches, if they're really desperate for them. I never used the Oghma Infinium one anyway, so it's none of my concern.