At first it will give 3 different models:
The 2 normal devices will probably get an hardwareupdate like new processor chips and so on. The 7s Edition is more interesting, it will get an Organic LED Display (short: O-LED) with almost no borders. But there are also some downsides, like in the 7s Edition there will not be a TouchID sensor anymore because its impossible to produce. Instead there will be a "FaceID" that will scan your face. And the Edition iPhone will cost around 1299.- Dollars, Damn Apple thats much!
Here are some hidden hints in the HomePod firmware:
Some proof for the no-borders Screen (also found in the Firmware as type of an iPhone icon):
I hope you cannot wait for the new iPhone like me :)
