Has CM Punk genuinely had enough with WWE for good or is he just doing a Chris Jericho and having a break?

He has been tired of WWE since last year, but no one knows if it's a storyline or not. Everybody's been debating about it. At MITB, what most probably will happen, is Punk will win the championship, then the MITB winner will cash in on him, winning it. Then MAYBE if this is all a storyline, Punk will want his rematch, and will stay.