Apple has issued a statement to a number of press outlets
including TechCrunch, indicating that all models of the iPhone 7 Plus as well as the Jet Black iPhone 7 have completely sold out ahead of Friday's launch and will not be available at Apple's retail stores. The announcement will help those who had hoped to purchase one of those models on a walk-in basis on Friday plan appropriately.As Apple notes, it is possible that other retailers may have some stock of these models, but given that Apple prioritizes its own sales channels over other retailers, customers should not count on being able to find them elsewhere.
Apple
announced last Thursday that it will not release first-weekend sales numbers for the iPhone 7, and given quickly slipping shipping estimates in Apple's online stores and extreme shortages of in-store stock for launch day, it appears early sales will be heavily constrained by supply rather than any weakness in demand.
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All iPhone 7 Plus and Jet Black iPhone 7 Models Sold Out for Launch Day