I guess Misha mentioned something about Ben Edlund not being on board for S9 at the All Hell Breaks Loose Con and then Super Wiki confirmed it.
I have had it confirmed by a higher (official) source that Ben Edlund will not be returning to Supernatural in S9.— Supernatural Wiki (@SuperWiki) June 1, 2013
Apparently he's going to work on Revolution instead. *sigh*
Damn it, Kripke! We need him!!!!
I've loved Ben's writing since he first started on SPN. He always seemed to have a good handle on what the fans wanted and what the brother's relationship was. Of course, there's many great writers on the team, but...he will be missed.