Kindle evolution – check the link below for more details
Amazon on Wednesday officially unveiled a next-generation Kindle that is what many tech pundits thought it would be: smaller and lighter, with a better screen and some Wi-Fi thrown into the mix.
The new e-reader comes in a couple of flavors, one with both Wi-Fi and 3G wireless for $189, and a Wi-Fi-only version that costs $139, some $10 less than Barnes & Noble's Nook Wi-Fi. The new Kindles come in graphite or white and ship on August 27, with Amazon taking pre-orders for both e-readers now.
On top of the more compact design, some other key additions include more memory--4GB instead of 2GB--and double the battery life (4 weeks instead of 2 weeks with the wireless turned off).