The complete details came from DVDAnswers.com
"Disney has announced plans to release a three-disc edition of Pirates Of The Caribbean this November. I'm afraid
that details are still pretty sketchy on this one at the moment, although we can tell you that it will be made up of the
standard two-disc set already on the market, along with a bonus disc containing eight new bonus features. The set
will be available to own from the 2nd November this year, priced at around $29.99"
Hmmmm, that's interesting.