A Cinema Blend tipster seems to think so:
Geoffrey Rush and director Gore Verbinski are apparently both planning to return, but... and this is a big maybe... Tim Burton might direct instead. Tim Burton! If there is a single director who could make people excited for a fourth Pirates movie, it has to be Burton. He's done so many amazing movies with Depp already, and might have the ability to make the new franchise as fresh and exciting as it was when the first movie came out. After all, Tim Burton is already making a movie for Disney, and if Alice in Wonderland is going well, you can see how they'd want to hang on to him.
Also Captain Jack will have a brother:
Most excitingly, there are talks of Captain Jack having a brother in the next movie, possibly to be played by Sacha Baron Cohen (perfect!) or Russell Brand (even more perfect!) Of course, that's probably just fantasy casting, but why would either of those comedians turn the role down? As we've mentioned before, the new movie might kick off a trilogy, which would revolve around Captain Jack's search for the Fountain of Youth.
