I agree with markbot, it's going to be a touch screen for sure. Corporations like to keep up with competitors trends so they would be watching the nook and sony touch screen implementations closely.
Touch screen dosn't matter to me so much on a reading device though, because they are so simple. It's better turning a page with a button rather than touching the screen because the hand on the screen obscures words (one of the problems with reading on an iphone).
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