http://movies.yahoo.com/shop?d=hp&cf=prev&id=1808556812
From the article:
Cast Notes: (3/24/04) Johnny Depp, Orlando Bloom and Keira Knightley were all quickly signed on for this sequel after the success of the first movie, but there's no word yet about what other supporting actors might return. There are likely to be new cast members as well. The British tabloids have been running stories about Keith Richards, who inspired Johnny Depp's performance, as coming aboard to play a pirate, but that should be considered strictly just a rumor until someone like Jerry Bruckheimer confirms it.