User blog comment:Yetti01/What will part 5 be about?/@comment-1984959-20121104004314

Pirates 5 is still in the development stage, so all bets are off at the moment. All that is known regarding P5 is that...
 * 1) It may possibly show how the Pearl gets out of the bottle. Who knows? Chances are the filmmakers might decide to get it out by the events of the fifth film, but I personally doubt it as it would leave many fans bewildered.
 * 2) Show the return of Jack Sparrow, most likely Barbossa and Angelica(especially Angelica as per the post-credit scene), and probably Gibbs(as he's now a huge part of the films now).

Anything else is either speculation, or, for now, rumors.