A previously unknown iPad has showed up in a developer’s app analytics, according to a report from MacRumors. The “iPad 3,6” appears to represent a new version of the existing iPad, and is believed to use the same architecture found in Apple’s custom A6 chip and iPhone 5. iLounge noted in July that Apple was working on a modestly tweaked version of the third-generation iPad, which was planned to include “the [Lightning]…
