While Pirates of the Caribbean 4 was only first confirmed last week, and while no script is finalized yet, it's never too early to speculate on the upcoming blockbuster.

We know Johnny Depp will return as Captain Jack Sparrow. According to Cinema Blend, two rumors about the film are now making the rounds:

• Captain Jack will have brother, possibly played by Sacha Baron Cohen or Russell Brand;
• Tim Burton will direct.

It's way to early to consider these rumors as anything close to facts, but they're fun to consider, aren't they?

Here's one thing we know aboutPirates of the Caribbean 4: Captain Jack Sparrow will be involved. Prominently.