from the lastest article by Al Lutz at MiceAge:
While the pirate ship bombarding the fort will likely remain the Wicked Wench, the ferocious new compressed air cannonball effect that promises to blow hats and sunglasses (and perhaps a few toupees) into the water with each passing boat was alluded to in the latest round of concept art released by Disney. That concept art was released out in Florida for their smaller version of this ride, but the same effect will be used in Disneyland.
The Walt Disney World (WDW) version of this Pirate rehab was suspended for a couple of weeks since the operations group out there wanted to run the ride for the Easter crowds, much to the annoyance of the WDI managers. But then the WDW version of this ride remake has always been on a smaller scale and with a smaller budget, and the scuttlebutt around WDI is that the Disneyland version will truly be the masterpiece.