Rumor has it that Bray Wyatt has earned the trust of WWE officials backstage to the point where he is now being allowed to write his own promos. He still needs approval from the creative department before using them on Monday Night Raw and Smackdown, though.
Since the start, Bray Wyatt has done all of the talking to the Wyatt Family. Luke Harper and Erick Rowan generally just stand to the side and in the background during the interview segments. On Smackdown this week, though, Harper actually says a few words.