This was an early proof of concept. Back when Iger and Cameron were describing how amazing and life like the flying feeling was going to be- they were on that thing.
The good news: these will still be incredibly convincing "banshees" with skin and will be able to mimic flapping wings, breathing, and head movement. Note the mimic part, not all of that will be tied to physical movements- it'll be very convincing for first time riders but once you actually break down everything it'll seem pretty basic. Still, since 99.999% of riders will not be seasoned park goers and/or repeat visitors, the effect will be spectacular. It's like any other ride- the first few times you haven't grown accustomed to the visual, auditory and touch sensations. Flight of Passage will set a new standard for those sensations, for a screen based ride anyway.
So what is the difference between this banshee that we see and the "banshee" that you say the final version will be? Movement? We've never ridden this banshee so what it used to do and what it does now doesn't matter all that much.
We're looking for what it will look like visually. Is what we're seeing and what we'll eventually ride on be the same, visually?