There were rumors on the subject, but Attractions Magazine has visually confirmed an exclusive collection of build-a-droid parts at Disney parks. The bodies look to be the same, but the colors are new, and it looks like most (if not all) of the heads can fit hats (including Mickey Mouse ears, Indiana Jones' fedora, and the Yoda ears baseball hat). I'm sure they're going to be expensive as hell and probably difficult to obtain all the parts, but I absolutely love this kind of stuff.
The rumor is that build-a-droid is going to come back in place of Vintage next year. If anything's going to replace TVC, I'll be very glad if it's build-a-droid.