In March it was noted (by many) that the iPhone OS 3.0 beta SDK contained a reference in a file, /System/Library/AppleUSBDevice/USBDeviceConfiguration.plist to “iProd0,1,” sort of a mystery device. The latest beta update for iPhone OS 3.1 similarly includes a reference to iProd. However, the USBConfiguration.plist file now has the string “iProd1,1.” Typically “1,1” is used by Apple when it releases first-generation products, like “iPhone1,1” for the original iPhone. The new string was revealed to Ars Technica