When does What's Happening!! return?

What's Happening!! is an American sitcom television series that aired on ABC from August 5, 1976, until April 28, 1979. It was Bud Yorkin's second series after he ended his partnership with Norman Lear and Tandem Productions. The show was loosely based on the Eric Monte-penned film Cooley High. It follows the lives of three working-class African-American teens living in the Los Angeles neighborhood of Watts.
The show stars Ernest Thomas as Roger "Raj" Thomas, Haywood Nelson as Dwayne Nelson, and Fred Berry as Freddy "Rerun" Stubbs. Additional co-stars include Danielle Spencer as Roger's younger sister Dee.