Very excited to see this!
I do wonder how long the actual switch will take from one movie to the next (i.e., how long the ride will need to be down). I do understand that the switch will include changing to hi-res digital projectors (saw that rumor over at WDWMagic as well), but even with that being the case, it seems like the sort of thing where it's just a matter of changing the projectors and film and then uploading a new set of instructions to control the movement (which has presumably already been tested and finalized on a mock-up elsewhere), but I imagine it's actually probably more complicated than that.