It looks like Nintendo may have managed to run an early prototype of its upcoming 3D handheld, the 3DS, through the FCC without anyone noticing -- well, for a few weeks, anyway. The filing was made available on April 30 and Wireless Goodness spotted it, posting the image above showing what looks more like an ATX motherboard than a handheld gaming platform. But, what wasn't noticed at the time was the aspect ratio of the top screen (in the middle of the circuitry): it's 16:9, while every other Nintendo handheld to date has of course been 4:3. That aspect ratio matches the 3.4-inch parallax barrier display from Sharp