The iPhone 7 and 7 Pro will go official in September with pre-orders allegedly starting on the 9th. Actual shipments will begin a week later, most likely on September 16 (a Friday). The exact date of the Apple event hasn't been confirmed yet.
Confirmed: Pre-orders start on the 9th. You can extrapolate the launch event date from there. https://t.co/gwoPzIM1dI— Evan Blass (@evleaks) July 28, 2016
Last year, the iPhone 6s was unveiled on September 9th, pre-orders started on the 12th, but sales started two weeks later on September 25 (a Friday again).
While we're at it, here are some more photos of the iPhone 7 and iPhone 7 Pro. Note that the unit with the 3.5mm headphone jack is the iPhone 6s Plus, hope you didn't get excited over nothing.
Thanks for the tip, Rick!