As I said before, they couldn't possibly have any significant sneak previews of Pirates 2 and 3 on the DVD if its coming out this December. The sequels haven't started filming yet and aren't slated for release until summer/fall 2006.
How can Disney justify a 3-disc release of Pirates when the 2-disc version was already pretty good? It had 2 commentary tracks and was loaded with other great extras, so I can't imagine what a 3rd disc would include. It can't possibly be promo featurettes to hype the sequel, because that hasn't...