According to The Hollywood Reporter, Ben Stiller, Teri Polo, Robert De Niro, Blythe Danner and Owen Wilson are returning, along with newcomers Jessica Alba and Laura Dern.
Paul Weitz (In Good Company) is directing the film, which has the working title of Little Fockers, since it focuses on the main couple's children. Keitel will play a contractor employed by Stiller's character.
Jane Rosenthal and Jay Roach, who directed the first two films in the franchise, are producing. John Hamburg, who co-wrote the first two pics, rewrote the original script by Larry Stuckey.
No production date has been announced.