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Monday’s iOS 7.1 update brought a slew of documented changes and two surprise additions – custom update bundles for iPad models not known to have been made public.
In addition to updates for the company’s latest iPhones and iPads, Apple’s download server hosts iOS 7.1 bundles for iPads with model IDs iPad4,3 and iPad4,6. As first noted by iClarified, these identifiers have never been seen before in the wild.
The Wi-Fi model of the iPad mini with Retina display is known as iPad4.4, while its cellular data-equipped counterpart bears the designation iPad4.5. iPad Air models are identified as iPad4.1 for Wi-Fi only and iPad4.2 when cellular radio is added.
The in-between nature of the iPad4,3 moniker suggests that these new models might just be evolutionary hardware updates rather than entirely new devices. They may be reserved, for example, for tablets intended for China Mobile’s TD-LTE single network that have not yet received certification.