Apple's recently released iOS 5 beta 3 might add the 3G toggle to iPhone 4S handsets, but that's not the only surprise hiding within the new firmware file. In a report first published by 9to5Mac, it is revealed that iOS 5.1 beta 3 makes explicit references to Siri Dictation, suggesting that Apple's "humble personal assistant" might soon be available on its 9.7-inch tablet.