In the extended trailer, we can see a clip from the same scene as the preview image we were given earlier this year.
Though it's not direct feed and is extra blurry, it's still noticeable that in the extended trailer that facial animation had not yet been incorporated.
On the top is a scene with Ryo and Shenmue bypassing the Shenmue Tree, the swing in the background.
In this image, it shows Ryo's old model, with his face being really stoic and his body proportions a bit stiff, as if he were a toy.
As you can see, in the bottom image, is the same scene where it shows Ryo with a new facial model, his face features a subtle smirk, his eyebrows raised and his eyes squinting naturally. Also, his anatomy naturally placed and doesn't look like it's arranged as if he were a plastic action figure.
Bonus: Short gif
As you can see the new face looks incredibly improved.