
The hong Kong Economic Times newspaper printed in their front page this Hong Kong Disneyland expansion map. It is supposed to be a 5 years expansion project covering an area of 5 hectares, mainly in the back of Adventureland and Fantasyland.
About the future new attractions themselves, my opinion is that we can count on the huge Pirates of Caribbean "land" - see rendering below - and rumours are talking about a Toon Town coming, too, in the back of Fantasyland. UPDATED 7/4: Finally it seems that the Pirates of Caribbean land project is "dead" and that the imagineers are going in a different direction...more news when i will have some!

The land for a third hotel is always available , as well as the 60 hectares for the phase two.
We all know that the park need more attractions, and there is no doubt they are going to build new one, the sooner being the better.
A chinese newspaper also reported that the deal for a new Shanghaï Disneyland was signed with Disney, for a park 8 times bigger than HKD. Both disney and the chinese denied that the deal was signed, which doesn't mean at all that it won't be done. My personnal feeling is that a Shangaï Disneyland will exist, but don't hope for an official announcement before the end of the olympic games...
More about this on the excellent Micechat at Miceage.com, from where is coming the map above.