Board Thread:Staff Discussion and Suggestions/@comment-13051909-20130806143201/@comment-5005434-20130809170457

I read an interview of Quintel (same one confirming a future HFG episode), and in it Quintel mentions "story arcs" that have been happening and are planned. By the way he says it, he hints that new story arcs are in the making. I predict Season 5 will include more Rigby and Eileen episodes.