Amazon unveils four new Kindle Fire models
SANTA MONICA, Calif. Amazon.com Inc. unveiled four new Kindle Fire models on Thursday, including ones with larger screens, as the online retailer steps up competition with Apple Inc. ahead of the holiday shopping season.
Amazon has recently increased its Kindle Fire orders to more than five million units before the end of 2011 as pre-orders for the machine remain strong, according to sources from upstream component suppliers.