Thanks to Producer Jerry Bruckheimer revealed some new plot details of Pirates of the Caribbean 4, aka Pirates of the Caribbean On Stranger Tides:

Pirates of the Caribbean On Stranger Tides Movie

– Captain Jack Sparrow (Johnny Depp) ill be looking for the legendary fountain of Youth
– Geoffrey Rush is back as Captain Hector Barbossa
– Ian McShane is playing the role of Blackbeard, the nastiest pirate ever (who’s also a kind of Captain Nemo utilizing some new-style technology from what wed heard before).
– Penelope Cruz also joins the cast, as Blackbeard’s daughter, and we may expect some romance between her character and Jack Sparrow

Well, sounds promising! Anyway, the movie Pirates of the Caribbean 4 will be released on May 20, 2011.
:)