Great voice cast! Mark Strong, Saoirse Ronan, Phyllida Law, Geraldine McEwan, Olivia Colman. For reasons mysterious, they will all be replaced in the U.S. release next year: Will Arnett and Amy Poehler will voice Arrietty’s parents, which suggests that the film will have a very different tone, a more comedic one. (Seriously, who replaces Mark Strong with Will Arnett in anything?) Saoirse Ronan as Arrietty will be replaced by Bridgit Mendler of Wizards of Waverly Place. WTF?