Just saw this and I though I will share:
https://twitter.com/dasungtech?lang=en
2200x1650 resolution sounds great, never heard about an e-ink screen with a higher one!
Mysterious function... Based on Dasung past products I would bet on some kind of port to connect it to pc to make it work as a second screen. To me it seems like a natural evolution of this device. It would broaden their customer base massively. With this function they would beat all 13.3'' e-reader competition out of the water.
If you add a better refresh rate on top of it - sounds like an ultimate e-reader devices for me and my friends.