A new report claims that the iPhone 7 and 7 Plus will each sport a Smart Connector when they launch later this year. Mac Otakara also backs up previous rumors that state that the new phones will ditch the 3.5mm headphone jack, with the 7 Plus also adopting a new two-lens camera.
Both are equipped with a Smart Connector at the back. If you compare iPhone 7 and iPhone 7 Plus with iPhone 6s and iPhone 6s Plus, there is no difference in size.
Based on Nowehereelse CAD image, the camera's lens have become larger in iPhone 7, and it is expected that the built-in iSight camera sensor will be made larger. From Bastillepost picture, it is expected that the iPhone 7 Plus will be made into a dual lens camera with the addition of a lens cover similar to the HUAWEI honor6 Plus.
An image of the supposed iPhone 7 Plus surfaced last month showing both the dual camera setup and a Smart Connector. The photo is not the highest resolution, and it would be wise to take this all with a grain of salt. We won't know anything for sure until Apple announces it.