Michael Edelstein, president at NBCUniversal International Studios, announced the news at a red-carpet event for "Downton Abbey: The Exhibition," which features costumes, locations and never-before-seen footage from the TV show, according to The Hollywood Reporter.
"We are working on getting the script right, and then we've got to figure out how to get the (cast) together. Because as you know, people go on and do other things. But we're hopeful to make a movie sometime next year," Edelstein said.
"Oh, well, you've got confirmation before us. We have no idea if that's happening," said Sophie McShera, who played assistant cook Daisy Mason. "But we would all love to be part of the film if it was to happen, for sure."
"Downton Abbey", which concluded in 2015, portrays the lives of the aristocratic Crawley family in England and their servants amid the backdrop of such historic events as the sinking of the Titanic and World War I.