Amazon launches new Kindle 2 on their site (pre sales only).  As you see the Kindle 2 is slim but largest than Kindle 1 which is a bit odd for me.

Compare dimensions:

Kindle 1 - Size (in inches): 7.5″ x 5.3″ x 0.7

Kindle 2 - Size (in inches): 8″ x 5.3″ x 0.36″.

Here the other details:

Slim: Just over 1/3 of an inch, as thin as most magazines
Lightweight: At 10.2 ounces, lighter than a typical paperback
Wireless: 3G wireless lets you download books right from your Kindle, anytime, anywhere; no monthly fees, service plans, or hunting for Wi-Fi hotspots
Books in Under 60 Seconds: Get books delivered in less than 60 seconds; no PC required
Improved Display: Reads like real paper; now boasts 16 shades of gray for clear text and even crisper images
Longer Battery Life: 25% longer battery life; read for days without recharging
More Storage: Take your library with you; holds over 1,500 books
Faster Page Turns: 20% faster page turns
Read-to-Me: With the new Text-to-Speech feature, Kindle can read every book, blog, magazine, and newspaper out loud to you
Large Selection: Over 230,000 books plus U.S. and international newspapers, magazines, and blogs available
Low Book Prices: New York Times Best Sellers and New Releases $9.99, unless marked otherwise [via amazon.com]