The most recent report/interview that I could find from Levi was on
link
"Levi says assembling the stars for another run of the television series is unlikely, but infrequent reunions that would require much shorter commitments could see Levi's old co-stars return for more Chuck.
"Anybody who's still waiting for a season six you need to stop waiting, stop asking, it's not going to happen," Levi said to laughs. "I don't think the show needs a full season 6 or more than that, and I can't get everybody back for that amount of time. What I can probably do is get everybody back together for, you know, six weeks at some point, and we can make a little Chuck movie."
