New evidence suggesting the existence of new, unreleased iPhone and iPod touch hardware has been found in iPhone OS 3.0. Ars Technica reports that the USBDeviceConfiguration.plist file, which lists details about the USB configurations of various hardware models along with their Device IDs and product names, lists not one but two unidentified iPhone models, as well as a new iPod touch model, and two unknown products. The original iPhone, iPhone 3G,…