This Sept. 21, 2012 photo released by NBC shows Jay Leno, host of "The Tonight Show with Jay Leno," on the set in Burbank, Calif. As Jay Leno lobs potshots at ratings-challenged NBC in his "Tonight Show" monologues, speculation is swirling the network is taking steps to replace the host with Jimmy Fallon next year and move the show from Burbank to New York. NBC confirmed Wednesday, March 20, it's creating a new studio for Fallon in New York, where he hosts "Late Night." But the network did not comment on a report that the digs at its Rockefeller Plaza headquarters may become home to a transplanted, Fallon-hosted "Tonight Show." (AP Photo/NBC, Paul Drinkwater)LOS ANGELES (AP) — Jay Leno is keeping up a comedy assault on his NBC bosses even after being treated to a make-nice dinner.