Here's one not on the list. Found this on Wikipedia
http://en.wikipedia.org/wiki/Walt_Disney_World_Resort#On-Site_Disney_Resorts
(yes, I know, less reliable than gossip from a bus driver)
"Coming Soon: The Tipton Hotel Based on the Hotel from The Suite Life of Zack and Cody[citation needed]
This hotel will be the newest of its kind, with Disney's newest Monorail Mark VIII going right next to it and also the newest of the Disney Vacation Club Resorts as well. It has been rumored that the new river that will lead into the hotel will give the hotel a nice water theme and have the possibility of Disney's newest water park to be built adjacent. More information to come as it is released!"
Since it mentions monorails, new river, and a water park, ths implies the Stolport. The water park could be a revamped River Country.
I find this scarry(and proably bogus), YMMV.
*edit* Wiki must have figured it out, the article has already been removed
This is not bogus, from an Eyes and Ears article covering a town hall meeting at the Contemporary in late June:
"Bob gave highlights from the weeks board of directors meeting, including the election of a new chairman, John Pepper, and explained that future plans for the Company include the growth of
Disney Cruise Line, Disney
Vacation Club

and possibly the planning of a new theme park."
"Bob" would be Bob Iger, and of course there were no details.