2013 Paperwhite is subtly better, faster
The good: Amazon has improved on last year's excellent Paperwhite e-reader with a faster processor, more responsive touch screen, and a better integrated light that's brighter and whiter and displays more evenly across the screen. Pages also refresh less frequently (less flashing). A smattering of new features enhance Amazon's already best-in-class content ecosystem.
The bad: Device hasn't gotten smaller or significantly lighter since last year, an AC adapter isn't included (just a Micro-USB cable for charging). The ad-free version costs $20 more.
The bottom line: While the "all-new" Paperwhite may seem like an unspectacular upgrade on the surface, it's a clear improvement over the original Paperwhite and arguably the best e-reader currently available.