Goodbye Mickey's Toontown Hello Star Wars Land more news revealed this weekend at the D23 Expo #26

http://www.slashfilm.com/marvel-disneyland-plans/

It is rumored that the Toontown and backstage areas will be replaced with Future Star Wars Land. Recently Disneyland bought land across the street from Disneyland, that may become the new backstage area for the triple D ranch where they will keep the horses. And a new parking structure to be built.
But as I said. This is A Rumor.
We will know more after this weekend as they may announce it at the D23 EXPO.