The CW will launch its 2016-17 broadcast season in October, with premiere dates to be announced later. “Supergirl” Joins The CW’s Stellar Lineup of Superheroes This Fall,Along With New Series “Frequency” and “No Tomorrow,”With “Riverdale” Set for Midseason. And your favorites like “Jane the Virgin,” The Flash,” “iZombie,” “Supernatural,” “The 100,” and more will return.