The review mentions AT&T 3G, but I couldn't find any mention of whether a new AT&T contract is required to buy the device at the stated price. If it is, then fsck that. If it isn't, then 'meh'. Its still pretty expensive. Wait for v 2.0.
Also, if one plugs its USB in, does it appear as 'USB storage', that one can copy PDF's to and be able to read them? Or is one required to use its proprietary software on a proprietary platform to load only special files with DRM?
And how about on wifi? Can one use any sort of standard protocol (ssh, ftp, smb) to copy PDF's in (or out) and/or can it navigate to an arbitrary URL and download a PDF, or does it only support the device accessing company-specified websites to 'buy' books?
Bottom line - Mandatory contract bad. Mandatory proprietary software bad.