The Amazon Fire HDX, formerly named Kindle Fire HDX, is a high-end model in the Amazon Fire line of tablet computers. It was announced on September 25, 2013, and was available in two models, 7 inch and 8.9 inch. The 7 inch WiFi model was released on October 18, 2013, and the 8.9 inch WiFi model was released on November 7, 2013, in the United States.