In my opinion its that they're actually making the game...in the open beta they told us "this is 30% of the game", when we go to the release all that was new was a rank increase from 30 to 50. So I feel they fibbed to us about the beta only being 30% of the game, and it was more like 50%+. Meaning they have a lot of content to either A) produce or B) revise and then implement.