Fall premiere dates announced for Nikita, new Green Arrow TV series, Supernatural and more WB shows

The CW Network has announced its 2012-13 season (and series) premiere schedule for this October, which includes the premieres of three new series, returning favorites on new nights, and one final season of an Upper East Side drama. HART OF DIXIE Premieres Tuesday, October 2 SUPERNATURAL Returns for its Eighth Season on October 3 The ….