Got my PW2 today. I'm reasonably impressed. The light is bright, and almost uniform. No pinholes or light leaks anywhere - I have been watching it closely.
The left most LED appears a little brighter, and it's leaving a bit of a purple blotch at any light level, but it's not hugely noticeable. Especially when you compare it to an external light!
I think I can live with Palatino, although the sizing options are kind of strange. But I still loathe the Kindle interface.
Some pics, including a fun one of the PW2 and Sony T2 with lighted cover.
L-R: PW2 at 7, PW2 at 15, PW2 and T2 - note that both devices have much sharper text display than I was able to focus on in a dark room with no flash, with the PW2 just slightly sharper. And at it's lowest level, the PW2's grey background is identical to the T2's. The White in Paperwhite definitely comes from the light.