The first official hint at a future for Supernatural was from CW Network Head Mark Pedowitz in a comment to EOnline:
While both Padalecki and Jensen Ackles are contracted through season eight, the CW has yet to make a decision about the fate of Supernatural…or anything other show for that matter. “We are considering everything for next year. We have made no determinations on any of our shows,” CW Boss Mark Pedowitz tells us. “I’m very happy with how Supernatural has done this year, in terms of ratings and production.” He also says if they have more “juice” in them, he could see it going on for “many, many years.” Our guess? It’s coming back
Para os céticos, eis aí a palavra de Mark Pedowitz, ninguém menos que o Presidente da CW. Ele está muito satisfeito com o desempenho de Supernatural, tanto quanto à produção quanto à audiência.