When iOS 7.1 hit Apple's products this week, swarms of happy tech-heads were rejoicing in the number of bug fixes and increased user-friendliness the update brought. However, even more eagle-eyed tech-heads noticed something very interesting -- and exciting -- for Apple fans: the update included fixes for two new, previously unheard of, iPad models.

AI blog reports that as of the writing of the blog, Apple's download servers are hosting update bundles for iPads named Apple iPad 4.3 and 4.6. To date, no such iPad have been released "into the wild," either domestically or abroad.

According to BGR, the iPad Mini with Wi-Fi is known as the Apple iPad 4.4, and the cellular data-equipped model of the iPad Mini is known as the 4.5. The 4.1 and 4.2 versions of the iPad refer to the iPad Air.

So, what does the existence of a 4.3 and 4.6 mean? There are two possibilities:

- They could be referring to updates designed for tablets made for China Mobile's unique TD-LTE platforms, which have not received certifications, or

- They could be referring to evolutionary hardware updates that are pretty minor and will be released without much fanfare.

There have been five versions of the iPad: The first generation established design precedents, such as the 9.7-inch screen size and button placement, that have persisted through all models. The iPad 2 added a dual core Apple A5 processor and VGA front-facing and 720p rear-facing cameras designed for FaceTime video calling. The third generation added a Retina Display, the new Apple A5X processor with a quad-core graphics processor, a 5-megapixel camera, HD 1080p video recording, voice dictation, and 4G (LTE). The fourth generation added the Apple A6X processor and replaces the 30-pin connector with an all-digital Lightning connector. The iPad Air added the Apple A7 processor, the Apple M7 motion coprocessor and reduced the form factor for the first time since the iPad 2. iOS 6 added Siri to the third and fourth generations and the iPad Mini.

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