Bezos introduces the Kindle Paperwhite, which uses light tech that represents four years of R&D. The light guide is a "fiber optic cable flattened out." The light is directed down, toward the display. That's the opposite of an LCD display and makes it easy to read outside.
Bezos touts the Kindle Fire HD's specs, including MIMO (multiple input, multiple output). It's the first tablet with MIMO, which offers "ridiculous amounts of computation" and improves reception, Bezos says.
A new feature in Amazon's Whispersync function offers "biomodal reading." You can listen to an audio book on the way home from work, then pick up where you left off with the text book later. (Bezos later announces a Whispersync feature for games, too).
Another feature, immersion reading, lets users track audio reading with the text in the book.