User blog comment:Corny4life/Wil God Be Back In Season 12?/@comment-30133885-20160824143401

That was certainly just a rumour spread by some a fan. Chucks return is my deepest desire for the next seasons, but I don't think he'll appear in seaosn 12 or 13. But he definitely will in the last season, which may be s15 or 20 or 100... . But now would be way too early.

He's on a divine family meeting, which will take some time, and thats why he officially promoted Sam and Dean as guardians of the earth.