A new feature doc about Hearst Corp., “Citizen Hearst,” will world preem as part of the Hamptons Film Festival next month.Fest also plans to fete Richard Gere with its Golden Starfish lifetime achievement kudo. Helmed by Leslie Iwerks (“The Pixar Story”), “Citizen Hearst” looks at the history of the company founded by William Randolph Hearst. Film chronicles the history of the media giant from its early days through to where the company stands today, with a roster of papers and magazines. William H. Macy narrates, with appearances by Oprah Winfrey, Mark Burnett, Bob Iger and Hearst topper Frank A. Bennack Jr. Iwerks and Jane Kelly Kosek produce the film, which will screen privately at Gotham’s Hearst Tower Sept. 18. The pic’s public preem is one of the few offerings to be announced so far for the Hamptons fest, which runs Oct. 4-8. Gere will take part in a Q&A with Hamptons fest chairman Alec Baldwin when he receives his award on Oct. 6 at East Hampton’s Guild Hall.