I personally have not heard anything, but latest rumor all over the web is Disney's Hollywood Studios and California Adventure will receive a new, ORIGINAL attraction currently known as "The Great Mickey Ride"

Early rumors suggest the attraction will focus on the Mouse himself and will be quite technologically advanced and trackless (cue the DLP Ratatouille comparisons) . In a world where recent additions have been focused on Star Wars, Marvel and Frozen it's nice to see something that may be iconically Disney in spirit. Don't forget... "It was all started by a mouse" :)

Let's really hope this one pans out. It shows TWDC is not afraid to shy away from making attractions only based on successful blockbusters, but perhaps honor the past while integrated the future. While I'm not sure exactly how this attraction will fit into the theme of either CA or HS, I'm all for this.

We should all be excited for this.