I'd bet the rolling thing is using segment addressing, it is still to see if someone wants to develop a flexible matrix addressed display.
It is amusing that they show the iLiad in landscape mode.
The H2, shown after the iLiad, was time ago a custom prototype by an engineer of e-ink labs, Holly Gates (so the H, I thought, even if somewhere it is labeled H2O), I am surprised to know he has updated his design to support colour. The original H2 was "a Gumstix SBC with 400MHz Xscale processor running a modified 2.6.7 Linux kernel" and run the display using the LCD port of the Xscale chip.
The reference to Harry Potter is a good one. I still think that they could put a simple slow display with a solar cell to case the "deluxe edition" of Harry Potter, next Xmas.
