Answer: OMG, were you eavesdropping?! 'Cause he did say something about a Papa Winchester comeback, and it went something like this: "It's not happening anytime soon. And not because we don't love Jeffrey; we'd love to have him back. But he's a very busy person these days and his schedule is notoriously hard to fit in with our schedule, so I don't see that happening in the near future. But [John is] off in a better place now. He's in heaven, or wherever. And I think he's going to hang out there and party for a little while until we're able to make Jeffrey's schedule work."