Just speculation on my part, but I'd say it's only a rumor. New development has really slowed down in PCB. Even some of the stuff that's already been started seemes to be on hold. I think developers are having a hard time with pre-sales, which makes the investors a little jittery.
Given the current state of real estate in PCB (and the rest of the US), the good but slowing economy, higher interest rates, and the abundnace of condos and new resorts in the area, I can't imagine someone would start another project as ambitious as it would have to be if they were purchasing Shipwreck Island.
Long live the speed slide!