ABC Gives David Muir A Publicity Push With New 'World News' Ad

ABC released a snazzy new trailer on Friday for its incoming "World News" anchor David Muir.

Muir is taking over from Diane Sawyer, who provided the voiceover for the spot. It showcases Muir the very, very busy and globetrotting reporter. Also, the show is reverting to its previous name, "World News Tonight."

Watch the ad below.