Depending on who you believe the iPhone 8 may be in short supply come September. According to the Economic Daily News (via 9to5Mac), all three rumored next-generation iPhone models have yet to start mass production. The new 4.7- and 5.5-inch "iPhone 7s" models will not even begin production until August, and the iPhone 8 may not be available until November.
It remains to be seen what features Apple will add to the iPhone 7s and iPhone 7s Plus. Normally the "s" upgrades retain the same external case while improving internal components.
All signs point to Apple continuing its annual iPhone refresh schedule. This likely puts the iPhone 7s and iPhone 7s Plus up for pre-order on Friday September 15, 2017 with devices arriving in stores on Friday September 22, 2017.
The tenth anniversary of the iPhone is fast approaching, and rumors surrounding Apple's next generation smartphones are starting to solidify. The latest report from Mac Otakara points to a flagship model named "iPhone Edition" in the pipeline. Launching alongside the iPhone 7s and iPhone 7s Plus, the iPhone Edition is said to have already passed Apple's engineering verification testing (EVT) process.
Three seems to be the magical number for Apple in 2017. Recent rumors have suggested that the Cupertino company plans to release three new iPad and iPhone models this year. The next-generation iPhone lineup will include a 4.7-inch model, a 5.5-inch model and a high-end 5.8-inch model, according to the DigiTimes.