“An updated USBConfiguration.plist in the most recent version of iPhone OS 3.1 beta offers compelling evidence that Apple has continued development on an unknown device, referred to as ‘iProd,’ that was first discovered in March,” Jeff Smykil reports for Ars Technica.

“As most Apple devices are assigned the ‘1,1’ designation in the first revision, this leads us to believe that there is indeed an unknown product inside of Apple under active development running the iPhone OS,” Smykil reports.

“While it’s easy to speculate that this may be the rumored Apple tablet we keep hearing so much about lately, we have yet to find any evidence that iPhone OS 3.1 is capable of running on a device with a tablet-sized screen. It’s just as possible it may refer to the camera-equipped iPod nano, though we doubt such a device would run iPhone OS. Hell, it might even be an iPhone nano,” Smykil writes. “What we are willing to bet on is that with a 1,1 moniker the product will see public release soon—perhaps as early as September, when Apple typically unveils new iPods.”

Read more in the full article here.