A beta of iOS 4.1 included three new "Configuration Descriptors" within its USB configuration files. One of which referred to a product as "iProd 2,1." It was believed that this was the next iPad since the same "iProd" term was used for the iPad prior to its announcement.
TUAW now reports that it was actually the new Apple TV.
iPhone developer who was looking through the USB device configuration list in the new iOS 4.2 beta. Our source found the fascinating configuration descriptor shown above. Noted as iProd in the device configuration, this slip shows that this instance of iProd is the new Apple TV, not a new, unannounced iPad.