LOS ANGELES - Steven Spielberg has a giant rabbit on his mind for his next film.

Spielberg is directing a remake of the James Stewart classic "Harvey," the story of a big-hearted eccentric who's branded a crackpot for claiming to have a six-foot tall invisible rabbit as his best buddy.

Casting is just getting started, with production expected to begin early next year.

The new version will be a contemporary update of Stewart's 1950 film, which was based on Mary Chase's Pulitzer Prize-winning play.

The film is a co-production between Spielberg's DreamWorks Studio and 20th Century Fox. A release date has not been announced, but a Fox spokesman said the studio is looking to have the film in theatres late next year.