User blog comment:Jimeee/Skyrim 1.9 beta update adds Legendary difficulty and raises level cap (Updated Apr 8th)/@comment-128.73.224.15-20130309084454/@comment-4709478-20130317194745

"here are 2 more paid DLC expansions planned - both of them true expansions like Dragonborn (one is a bit smaller, one is larger)"

http://www.examiner.com/article/future-skyrim-dlc-supposedly-leaked-bethesda-developer-responds

I think not...