This is Season 6, there will be a final Season 7.
"Mad Men Season 5 proved to be the most polarizing in the show’s history to date (it even failed to snag a Golden Globe nod for Best TV Drama), but its themes of social, political and cultural upheaval – coupled with the emergence of modern domestic dissatisfaction – resonated with even the more critical viewers and fans.
Thus, anticipation remains high for the return of the Sterling Cooper Draper Pryce staff, following the S5 finale – and its ominous conclusion - but proceeding what has been acknowledged as the penultimate season, before we learn Don Draper’s (Jon Hamm) ultimate fate in the seventh season."
http://screenrant.com/mad-men-season-6-premiere-date-season-7/