Amazon.com Inc ramped up its push into hardware on Wednesday with the debut of six new or upgraded devices, including a high-end $199 e-reader called the Kindle Voyage and its cheapest-ever touch-screen tablet. Other new devices unveiled on Wednesday are a $99 Kindle Fire HD tablet, which includes a smaller, six-inch screen as well as a tablet designed for kids that starts at $149. Amazon also upgraded its 7-inch and 8.9 inch Fire tablets.