There's an excellent
article by Phred Dvorak (filling in for Walter J. Mossberg) in this week's edition of "Personal Technology" in
The Wall Street Journal. In it he compares the LIBRIe to the Panasonic SigmaBook and discusses the E Ink technology.
I wouldn't be surprised if the U50/70 and these two ebook readers (especially the LIBRIe) make their way to US shores within the next 6 months despite the track record of ebook readers. Sony will be making an all out push on digital content (great website
here) with the PSP and other devices. The LIBRIe or another ebook reader will play a big part of Sony's plan IMHO.