We just heard that a deal for AMC to pick up the fifth season of Mad Men, and now it’s official. However, Deadline reports that the cable network has not yet finalized a deal with the series creator and executive producer Matthew Weiner yet. The hold-up with Weiner is the reason the premiere of the fifth season will be pushed back to early 2012. The official statement from the network says, “AMC has officially authorized production of season 5 of Mad Men, triggering our option with Lionsgate. 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.” So it’s some bittersweet news for Mad Men fans as we get a fifth season, but not for another year.