Earlier reports suggested that the facility being built in Arizona would be used for building fingerprint sensors for the iPhone 5S and future Touch ID enabled products. But 9to5mac reports today that, based on some recent documents that were uncovered, it seems that Apple has other plans for the Sapphire plant in AZ, i.e., iPhone displays. A previously shot video [via YouTube] also surfaced recently showing the endurance of the Sapphire screens on the iPhones, even when pitched against concrete!
The numbers being predicted here clearly point to a huge number of sapphire screens being planned to be manufactured and this does not seem to suggest tiny Touch ID sensors. Bottom line is that Apple should be commended (tremendously) for bringing back these manufacturing jobs (the new Mac Pro is being manufactured in Texas as well) to America, albeit at a slow pace. And I think this is what Tim Cook and Apple have in mind on how to spend the huge cash pile they are sitting on, at least a percentage of if.