Robert Downey Jr. to Join ‘Captain America 3’

Robert Downey Jr. is on the verge of signing on to “Captain America 3,” a move that would bring the Civil War storyline from Marvel’s comicbooks to the bigscreen and trigger the start of a new phase of movies from Marvel Studios.

The actor is in final negotiations to play billionaire Tony Stark in the third installment, which is slated to begin production in the Spring for a May 6, 2016, release. Downey is already set to suit up as Iron Man for next year’s “The Avengers: Age of Ultron” and “The Avengers 3.”