Tom Hanks Admits To 'Toy Story 4'?

In a recent interview with the BBC regarding Larry Crowne, Tom Hanks was asked if there are any plans to do a fourth Toy Story. And this was his response...

"I think there will be yeah. Yeah, yeah. They’re working on it now. There you go.”

Now could this be Tom's way of joking around? Perhaps. Nonetheless, I don't think a new entry could top part three.