Apparently, they DID shoot a scene explaining how the "curse" could be broken, but I kinda suspect it was removed to give them a sequel out, in case Orlando Bloom is willing to do the fourth movie. I hope not, though... Will freed or not, I think their story had a really good conclusion, and it would kinda cheapen things to have a "Let's save Will" plot in a fourth movie. Besides, I like the fact that he's willing to endure the ten years for the one day. Besides, it beat the no days he was going to have, otherwise.

But yeah, if we get a Pirates 4, I just hope they let Jack and Barbossa drag new characters into their adventures. (*is still just insanely amused that he mentioned the Fountain of Youth watching DMC the other day, and that's what they suggested at the end of the movie*)