But those fans should brace themselves for big changes.
It shouldn't be a surprise to anyone who saw the Season 3 finale that Season 4 would bring significant changes for nearly everyone in the cast. The last we saw, Betty (January Jones) was on a plane to Reno with her new boyfriend Henry, and Don (Jon Hamm) had just conspired to break away from the British-owned Sterling Cooper firm (along with Roger, Bert, Pete, Peggy, Joan, Harry and Lane) to form a new firm, Sterling Cooper Draper Pryce.
So those changes (new offices, new homes) shouldn't come as a surprise. And yet, they do. . . .