New Amazon Kindle announced: $139 WiFi-only version and $189 3G model available August 27th in the US and UK Let's be honest -- you saw this one coming, didn't you? Today Amazon is introducing a new reading device for e-book aficionados dubbed simply... the Kindle. The new handheld -- slated to be released on August 27th -- is 21 percent smaller and 15 percent lighter than the previous model, has