This is a big blow for future development of AI!
As with everything in capitalistic scientific advancement, and foremost in the military, development works best if there is a future practical application in sight. So far NLP (NOT [god beware] Neurolinguistic Programming, but Natural Language Processing) and AI research didn't make big strides because they are just fiddling around with no real idea what to use this for.
But with the Kindle 2, we have the first actual application which would benefit from near-perfect text-to-speech. So this will (or would have, or still will, after Amazon now caved in?) spur development of t2s systems that can actually understand what they are saying, on a certain level. And further from that, that's my prophecy, true AI systems will develop because you just have to start somewhere.
But now.. well I guess they will still do research on how to read the books that they may the best way.