When does American Dad! return?

American Dad! is an American animated sitcom created by Seth MacFarlane, Mike Barker and Matt Weitzman for the Fox Broadcasting Company. The show centers around the Smiths, a dysfunctional family consisting of parents Stan and Francine, their children, Hayley and Steve, as well as a goldfish named Klaus and an extraterrestrial named Roger. In the seventh season Hayley's boyfriend (turned husband) Jeff Fischer joined the main cast, followed by Rogu, Roger's neoplastic son who joined in season fifteen. It has received generally positive reviews and has been nominated for numerous awards.
The series focuses on the eccentric upper middle class Smith family in a fictionalized version of Langley, Virginia. The family's unusual goldfish, Klaus, who has the brain of an East German athlete; Roger, the alien, is a flamboyant, hedonistic, self-serving master of disguise; and Roger's ex-tumor son Rogu.