ABC will soon bring remakes of the classic sitcoms “Diff’rent Strokes” and “The Facts Of Life” to screens with a third installment of its “Live in Front of a Studio Audience” franchise.Jimmy Kimmel made the announcement Thursday on his late-night show, saying the “Diff’rent Strokes” update will feature John Lithgow as Mr. Drummond, Kevin Hart as Arnold, Damon Wayans as Willis, and Ann Dowd will play Mrs.