This is all the infos that we currently have on the new Pirates of the Caribbean 4 movie , from Comingsoon.net:

Pirates of the Caribbean 4

Release Date: May 20, 2011
Studio: Walt Disney Pictures
Director: Not Available
Screenwriter: Not Available
Starring: Johnny Depp
Genre: Action, Adventure
MPAA Rating: Not Available
Official Website: Not Available
Review: Not Available
DVD Review: Not Available
DVD: Not Available
Movie Poster: Not Available
Production Stills: Not Available
Plot Summary: Johnny Depp is returning as Captain Jack Sparrow in a untitled third sequel in the popular Pirates franchise.

No word if any other cast or if director Gore Verbinski are returning - it seems unlikely Depp would return without Verbinski and Geoffrey Rush would seem to be an no-brainer. "Pirates of the Caribbean: At World's End" teased audiences with Sparrow & Barbossa both in hot pursuit of the Fountain of Youth!

Trailer:
Coming Soon!