In the US they are only black and white.
In Japan color is already on the market.
Look for color to hit the US market in 2011 (we are always behind Japan and Korea now - thank you FCC).
Electronic paper is not the only way to view a textbook - laptops and netbooks are ubiquitous.
I prefer a tablet PC myself - here is what I use:
It toggles between portrait and landscape mode.
That’s news. I knew color ebook readers in prototype form were there, but didn’t know that they’ve already gone on sale.
Are you sure this one is not LCD / OLED?