A while ago I was surfing the web and came across a list of "late 2011" POTC sets. I believe it was on Brickipedia (which isn't that trustworthy). Thing is, the names and (some of) the prices were different from the spring sets, yet they sounded like basically the same sets i.e. "Ship's cabin", "Mermaid attacks". the article may have been written by some ignorant guy who had only seen pics of the sets, but didn't know the names, idk.
Also, on the same site, I found a flying dutchman article (not Spongebob), which didn't have any pics, but had a list of minifigs. Some of the figs made it sound like it would be from AWE, like captain Elizabeth Swann. There sounded like there would also be a TON of Davy Jones' crewmen. But don't get your hopes up. Remember, Brickipedia is NOT very reliable. Just thought I'd throw my research in, I'm logging off now. Cya.