Apple has revealed some additional details about iOS 7 on its website. Images of iOS 7 on the iPad and iPad mini were spotted on the bottom of the Apple iOS 7 features page, showing iOS 7 on the second- and fourth-generation iPad, in addition to the iPad mini. A new red icon representing Photo Booth can be seen in these photos. Additionally, viewing Apple’s iOS7 design page using a mobile device reveals a few alternate icons. The weather icon…