Studio Ghibli's Arrietty is receiving not one but two English language dub tracks for its release in English speaking territories. One - featuring the voices of Bridgit Mendler, Will Arnett, Amy Poehler and Carol Burnett - has been prepared for the US release. And another - featuring Saorise Ronan, Mark Strong, Olivia Coleman and Tom Holland - has been prepared for the UK release.
http://twitchfilm.com/news/2011/06/uk-dub-trailer-for-studio-ghiblis-arrietty.php