Jon Favreau begins work on sequel to the Marvel summer hit. While fans of the Dark Knight are still waiting for any news of a sequel to this summers Batman movie, Iron Man devotees can rejoice with the news that director Jon Favreau is hard at work on the sequel to this summers other superhero movie. Favreau confirmed to reporters that while there has yet to be a formal announcement on the sequel to ‘Iron Man,’ he’s begun developing it. “We’re working on it now,” he said, “which hasn’t been officially announced. It will be released in 2010.” The film is expected to hit theatres on April 30th, 2010 in order to be the first film to kick-off that summer, much like Iron Man did on May 2nd of this year. Justin Theroux (Tropic Thunder) is writing the script. Robert Downey Jr., Gwyneth Paltrow and Terrence Howard are expected to return as well.