This was a quote from a Variety article:
Bob Iger said he was recently given the chance to try out the ride, which will enable guests to fly through “Avatar’s” Pandora on the back of a flying banshee.
“It felt so real, so lifelike,” Iger said of the prototype vehicle guests will board to travel through the fictional land. “There’s never been anything like it.”
The vessels that guests will ride upon will essentially be the banshees themselves, with bodies that move to mimic a breathing beast. The flying sequences will be brought to life through large video screens — similar to “Soarin'” — with vehicles moving with the
3D action inside a massive theater.
While I'm sure Iger is referring to the prototype of the ride the actual theaters at AK aren't built yet so he hasn't actually ridden the real ride. There also still seems to be some debate about whether the ride vehicle will actually be something like an AA banshee or if that's more of a figurative description of the how the ride will feel.
Based on this quote it stands to reason that a working prototype exists somewhere at WDI so if they wanted to give us a glimpse of what the ride vehicle will look like or what the film will be like they could do it at D23. At some point during Mine Train construction they released a video that combined actual ride footage and a computer simulation. That's a possibility too, but there probably won't be much to show from the actual job site. They could also just stick with more concept art too and give us some more specifics on what the ride will be like. I'm also curious to see if there is any reference made to the boat ride. It seems there are conflicting rumors about whether it will open with the rest of the land or be delayed.
