News / September 14, 2006 Who's in Horton? Christian Ziebarth TWITTERFACEBOOKPINTERESTINSTAPAPEREMAILPRINTUSA Today reports on Blue Sky Studios’ Horton Hears a Who!, giving the release date as March 14, 2008. The all-CGI/no live-action Dr. Seuss adaptation will be voiced by comedy powerhouses Jim Carrey and Steve Carrell, among others.