I think that they will definately do some rehabbing:
1. Epcot
I think that Disney will be replacing Spaceship Earth with a different ride system sometime within the next 10 years. I loved this ride as a kid and still love it, but I am not opposed to giving it a face lift.
I think that the whole Wonders of Life pavilion is either going to be entirely replaced or majorly revamped. Whenever I go in there, its completely empty.
I don't believe they will add any more countries to the World Showcase.
2. Animal Kingdom
I think, at least I hope, that they will add some more rides. I do enjoy this park and what it has as of now, but it isn't an all-day park for me. There is a great deal that I am not interested in riding or seeing at this park.
3. MGM Studios
I think they'll definately redo the Great Movie Ride, which I think is a great move on their part.
I think they need one more draw to bring people to this part, like Tower of Terror.... what it is, I don't know
4. Transportation
I don't think they'll extend the monorail line. The buses are such an effective form of transportation right now that I don't see why they'd spend money to fix what isn't broken. Besides all the arguements in posts on this board have lead me to believe that there would be problems with extending it anyway.
5. New Parks
I don't think there will be any new parks, WDW has got so much already with 4 parks, 2 water parks, Downtown Disney, etc... that the average family staying one week would have way too much to do!
6. I don't think there will be any more resorts, though I do hope they open Pop Century...it just seems like its sitting there. Disney has an enormous amount of resorts and I just don't think there is a need for anymore.