Katzenberg: There will be 4th 'Shrek'

Galvanized by the success of "Shrek the Third," Jeffrey Katzenberg says the tale of the green ogre who married a princess will continue.

"More Shreks are coming!" said producer Katzenberg, flanked by "Shrek" stars Cameron Diaz, Mike Myers and Justin Timberlake at a news conference Friday in Berlin, where the computer-animated film opens June 21.

Katzenberg said there will be a half-hour animated TV special, "Shrek the Halls," featuring the Shrek characters' versions of holiday traditions. As for the plot of the fourth installment of the movie franchise, Katzenberg would reveal only that Shrek will have to come to terms with something difficult from his past.