As of Dec. 12, 2015, there are no trailers available for a third Hulk movie, as the film is not in production. According to Kevin Feige, president of Marvel Studios, the Hulk is planned to appear in the films of other characters for the foreseeable future.
The first major Hulk film, "Hulk," was released in 2003, starring Eric Bana in the title role. A reboot of the film, "The Incredible Hulk," was released in 2008 as part of the Marvel Cinematic Universe, and starred Edward Norton in the title role. The Hulk, played by Mark Ruffalo, has since appeared as a supporting character in "The Avengers" and "Avengers: Age of Ultron."