A feature-length documentary on the life and career of June Carter Cash premieres this month. The late icon's son, John Carter Cash, says, "I'm thrilled to share the full story of my mother's life with the world." The documentary will feature rare and never-before-seen material, as well as interviews with family members and friends, like Dolly Parton and Reese Witherspoon. It's called "June," and it will premiere on Paramount-Plus on January 16th.