Apple is ought to announce the upcoming iPhone event later this month, the event traditionally takes place in September. A likely date is September 7, as earlier rumors pointed to a pre-order kick-off on September 9. The actual in-store sales will begin on September 16.
However, carriers have a slightly different roadmap. A newly leaked AT&T retail schedule details merchandising reset hours and the two dates listed are September 9 and September 23. That’ a week later than previously expected.
Apple’s 2015 iPhone event invitation
9to5Mac speculates that both September 16 and September 23 release dates are possible, provided pre-orders start on September 9. In 2015, the iPhone 7s launched on September 25, following a pre-order period that commenced on September 12.
Ultimately, these dates are nothing but a speculation at this point since Apple hasn’t officially revealed the date for the iPhone 7 and iPhone 7 Plus event. Don’t expect an iPhone 7 Pro for this year, though.