Castiel is gonna be back on a more permanent basis next season. Misha Collins tweeted that he’s going to be a series regular for the recently announced ninth season of Supernatural. He was a regular for seasons 5 and 6, but only a guest star in seasons 4, 7 and 8. He only appeared in five episodes last season and has appeared in only five so far this year, but the promotion means a lot more Cas next year!
Also, THR is reporting that Misha will join the ranks of Jensen Ackles by directing an episode next season.