The fifth season of the AMC series "Mad Men" has been postponed to early 2012 due to "ongoing, key non-cast negotiations."
The 1960s-era drama series stars Jon Hamm as suave ad firm partner Don Draper and also features January Jones as his ex-wife, Elisabeth Moss as executive Peggy Olson and Christina Hendricks as voluptuous office manager Joan Harris. The fourth season finale aired in October.
"AMC has officially authorized production of season 5 of 'Mad Men,' triggering our option with Lionsgate," the Hollywood Reporter quoted the cable channel as saying in a statement on Tuesday, March 29 - the day of the release of the show's fourth season on DVD and Blue-ray.
"While we are getting a later start than in years past due to ongoing, key non-cast negotiations, 'Mad Men' will be back for a fifth season in early 2012," the statement said.
Meanwhile, many "Mad Men" cast members have been busy with other projects.
Hamm is currently shooting the film "Friends With Kids" with Megan Fox and appears in the new fantasy-action movie "Sucker Punch." Last year, he starred in Ben Affleck's Oscar-nominated movie "The Town."
Hendricks recently filmed the movies "Drive" with Carey Mulligan and Ryan Gosling and "Detachment" with Adrien Brody, who was once linked to Jones, although the two have not confirmed a relationship.
Over the past year, Hendricks has also become somewhat of a fashion icon, starring in campaigns for collections by Vivienne Westwood and London Fog.