There's no doubt that lots of changes are in store at DL over the next decade as they duke it out with Universal and other parks to sustain record revenues that the parks are pulling in.
My predictions for additional E-ticket attractions with general (location) at DL over the next decade or so.......
1. Tron/Marvel/Other(?) hybrid coaster/dark ride (Innovations/Autopia)
2. Beauty & the Beast trackless dark ride (Autopia). Also Be Our Guest restaurant, retail, and meet & greet being installed at WDW.
3. Grizzly Gulch coaster (Frontierland). I think that Big Thunder may actually be replaced with this attraction and it will be placed toward the underutilized back portion of Frontierland and partly outside the railroad footprint. This would allow Disney to free up valuable space in FL to re-do that land add future attractions/retail/restaurants to that space.