This is presumably the display that Sony used in their prototype discussed here
I'm certainly very pleased to see an eInk display that doesn't have a glass substrate.
The display seems to be 1200x1600 pixels, which at a 13.3" diagonal is 150ppi.
Not too bad for such a large screen. But I hope that in the next couple of years they will be able to improve the pixel density. I suspect that the low pixel density is why they are initially producing a 13.3" screen rather than a 6" or 7" screen.