Tim McGraw will host an all-star CBS special in Las Vegas on April 8, presented by the Academy of Country Music and Dick Clark Productions. Titled ACM Presents: Tim McGraw's Superstar Summer Night, the event will be held at the MGM Grand Garden Arena one night after the ACM Awards. Special guests from multiple genres will be announced in the coming weeks. No air date has been announced. All proceeds will benefit ACM Lifting Lives, the charitable arm of the ACM. Tickets will go on sale Friday (Jan. 25).