Shanghai International Tourism And Resorts Zone recently updated their official website. It not only looks better, but also has a lot more information about the resort.
The following is a grand plan for Shanghai Disney Resort from 2011 to 2030. The resort's future seems to be very well planned already.
The plan gives us an idea about how the resort will develop through the years. Here I would like to elaborate on each of the three phases.
Phase 1 - Infrastructure (2011-2015)
As you can tell from the time period, this phase is basically the construction of the theme park, the two hotels, "Downtown Disney" (it might not be named this way) and other basic functions.
Phase 2 - Combining Functions (2016-2020)
I am not sure if I understand it correctly. In the Chinese text, it says "Continue to develop the theme park", which, I assume, means expansion, and "Finish constructing the facilities", which, I assume, means other facilities around the resort.
Phase 3 - Improving the Resort (2021-2030)
In this phase, they will try to improve the integration of the resort and other nearby facilities, perhaps those that are marked dark yellow in the picture below.