Source: http://feeds.gawker.com/~r/gizmodo/full/~3/BUyQX5o5Dds/sizemodo-the-kindle-2-vs-its-predecessor
How does the new Amazon Kindle stack up size-wise when compared to the original version? Well, the first Kindle measured 7.5" x 5.3" x 0.7" while Kindle 2 clocks in at 8" x 5.3" x 0.36".
Right off the bat, the second-gen Kindle is significantly thinner than the original. At only .36-inches, it is nearly half the size—and around 25% thinner than an iPhone. It's also half-an-inch taller (the screen is still 6") but it weighs in at 10.2 ounces—just a shade lighter than the 10.3 ounce original.
It may not have shed much weight, but 10.2 ounces is still comparable to a traditional paperback book—and it's still quite an accomplishment given the 7-fold increase in storage and 25% increase in battery life. [Amazon]