Downton Abbey, the Emmy-winning drama from Julian Fellowes, has been renewed for a fifth season. It will continue to air on PBS' Masterpiece Classics and ITV. The period piece, which recently wrapped its fourth season in Great Britain, raking an average audience of 11.8 million viewers, won't see its stateside return until Jan. 5. That lengthy delay has yet to dampen Downton's ratings momentum. The third run grossed 24 million viewers, making it PBS' most watched drama to date.