Ahead of the Mad Men premiere for the show's final season, Jon Hamm has completed a 30-day stint in a treatment centre for alcohol abuse. His rep said in a statement, "With the support of his longtime partner Jennifer Westfeldt, Jon Hamm recently completed treatment for his struggle with alcohol addiction. They have asked for privacy and sensitivity going forward." The news comes during a busy week for the actor; on Sunday, Jon joined the rest of the Mad Men cast at a screening in NYC, and on Monday, the group attended the unveiling of a Mad Men art installation in the city. Meanwhile, Jon graces the April cover of GQ, which hit US newsagents on Tuesday, and in the interview, he opens up about moving on from the hit show and starting a new chapter.