Amazon's Kindle has been making a lot of headlines lately, and now the company has introduced a new generation of Kindle devices . The new Kindle is smaller, lighter, faster, and has 50% better contrast than any other e-reader on the market, according to Amazon. It has a new electronic-ink screen and a new design with a 21% smaller body, while keeping the 6 inch screen of the old Kindle. It's 15% lighter at 8.7 ounces. Amazon claims it has 20% faster page turns,