Assuming this all pans out -- historically -- it would mean that iOS 7 would likely hit devices in the first or second week of September, and that the iPhone 5S would hit retail on Friday, Sept. 20.
One of the key questions that remains is whether or not Apple will release an lower-cost iPhone alongside its flagship mobile device. There has been speculation for years over a budget iPhone, dubbed thus far the iPhone lite, the iPhone mini (or M), and the iPhone 5C (for color, as the device is rumored to come in a number of colors with a plastic shell).
The device would be lower-cost, not low-cost, as most analysts target a $300-and-up unsubsidized price for the device. It would be more of a mid-range device.
Until now, Apple has addressed mid-range customers by selling year- or two-year-old devices (for example, it currently still sells the iPhone 4 and 4S for $200 and $100 less than the state-of-the-art 5).
While most believe that 2013 is the year that Apple will finally release such a budget iPhone, it's unclear if it will release it alongside the flagship iPhone 5S. It's also unclear what Apple has in mind for an iPad mini and iPad refresh.
In terms of its flagship phone, this is expected to be an "S" year, with most of the hardware changes internal and not external. Expected are processor improvements, camera changes, and perhaps a fingerprint sensor, as well.
iOS 7 has been given a complete UI revamp, thanks to Jony Ive, and there will be features specifically targeting the new device, as well.
There is also speculation about an Apple smartwatch (iWatch) and smart television, but neither of these is thought to be close to release.