The singers will join mainstays Blake Shelton and Adam Levine as Gwen Stefani makes an exit after only one season.
With season 7 of "The Voice" underway, plans for season 8 have already been made.
23:16 Texans kicker Ka'imi Fairbairn watching Kobe Bryant videos19
02:29 Houston coach Major Applewhite will handle bowl game play-calling24
19:32 Offensive coordinator Brian Johnson leaves UH for Florida28
20:38 'Queer Eye for the Straight Guy' set to return to Netflix with a brand new cast27