I believe this is a new hands-on video of the Paperwhite:
http://www.youtube.com/watch?v=iStSEX0D4nM
I'm assuming like all the other videos you really can't judge the color of the light because of the camera's white balance, but from what I can see it seems the light is pretty uniform and I don't notice any blotches. Anyone who has seen them on the original can probably be a better judge of that.
Also, I think it's kind of funny how the interviewer kept asking questions that the marketing guy didn't seem to want to answer. And I think he was pretty annoyed the interviewer kept touching the screen.
