NBC BUILDS ON STRONG FALL SCHEDULE WITH THE ADDITION OF NEW SERIES ‘QUANTUM LEAP’ AND ‘LOPEZ VS LOPEZ’ TO ITS WINNING LINEUP NBC Wins September-to-May Season in Key 18-49 Demo #1 Unscripted Show “The Voice” Returns as Superstars Camila Cabello and Gwen Stefani Join John Legend and Blake Shelton as Coaches Alongside Host Carson Daly …