After a brief false start online, Amazon announced the refreshed versions of their Kindle Paperwhite devices yesterday, with the more basic model available as of September 30. The features and specs are lavishly presented online, so we won’t go to great lengths here. The most interesting thing to us is that this “sixth generation” device sells at the same price as its predecessor — $139 for the wi-fi model (without ads) — despite nearly 6 years of “predictions” that these ereaders will soon be free. The screen, which Amazon says is better than ever, now uses “Carta e-paper technology” rather than […]