It's not going to be on the air in the U.S. until next year, but the trailer for season 4 of "Downton Abbey" is already getting the faithful viewers wanting more.

There are some new faces like Paul Giamatti.  He's joining the cast as Cora's brother, Harold, while old favorites like Maggie Smith as the Dowager Countess is returning.

"Downton Abbey" returns to PBS stations this winter, on Jan. 5.

Watch the trailer below:

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Waymo autonomous vehicles operate across 65 square miles inside I-285 and have been involved in six incidents with Atlanta Public School buses since May. Waymo issued a recall because of their cars briefly stopping or slowing down before continuing forward while a bus was stopped and flashing its lights. (Courtesy of Atlanta Public Schools)

Credit: Courtesy of Atlanta Public Schools