A flood of detailed Star Wars: Episode III -- Revenge of the Sith "spoilers" has hit Internet chat sites following screenings of a rough-cut version of the film. (Typical: "Does Yoda really fart in
the movie?" "In the rough cut, he did." "Will we see Yoda use his lightsaber any time beside the fight with Sidious?" "Heck, yes. Yoda even cuts someone's head off!") Those who have seen the rough-cut have been unanimously enthusiastic about it. The film is scheduled to be released
on May 19, 2005.

Source: Press Release