During an interview with TV Week, Seth MacFarlane acknowledged the strong possibility of a Family Guy movie.
“We do want to do it and we will do it at some point. It’s just time," the show creator said. "We in the past 6 months started talking seriously about it. So my hope is that we’ll get going in the next year. Doing the show is a seven day a week process and finding the time to squeeze in a movie is… I don’t know how we’re gonna do it, but we’ll figure it out.”
As for the plot, MacFarlane said:
“I have an idea of what it’s gonna be. It’s definitely something that you could not do on the show, which to me is the only reason to do a movie.”