Amazon has just announced the third generation of their popular Kindle e-reader devices. The new Amazon Kindle is smaller, and lighter but still has the same display size. They are using E Ink's next-generation "Pearl" displays which offer 50% improved contrast.

There are two versions: Wi-Fi only and WiFi/3G. Both versions will ship on August 27th, and can be pre-ordered now. The Wi-Fi only will cost $139, and will come in Graphite. The 3G version will cost $189, and you can choose between white and Graphite.