Release date confirmed, Final Season, 13 episodes, 2 hour final episode!
http://deadline.com/2014/11/the-mentalist-final-season-premiere-date-undercover-boss-cbs-1201273104/
CBS has made it official — the upcoming 13-episode seventh season of The Mentalist will be the crime drama’s last. The final season of The Mentalist will premiere on the series’ most recent regular night, Sunday, on November 30, airing there for five weeks before it moves to Wednesday 8 PM on January 7. The Mentalist will conclude its run with a two-hour finale on February 18.