Apparently the ride in the Anaheim park (and presumably Orlando too) has been updated with elements from the POTC movies. This usenet posting has a summary of the changes. I suppose adding Captain Jack Sparrow to the ride was inevitable, but I am really getting a sad "New Coke" feeling from it even though the writer of this message liked the changes.
Most of the ride has remained unchanged, though everything was given a fresh coat of paint. And every single effect, including some I haven't seen working in years, was working perfectly. There were a few new props here and there, including a skeletal parrot in the captain's quarters and the "Aztec gold" treasure chest from the first pirates film in the treasure room...
Read the whole post here... and let's hope that they don't mess around with the Haunted House.