Well IIRC the portrait mode was absent completely from the 7+ camera app.
This is analogous to the Tesla example, new hardware no software.
The fact that the 7+ has a different portrait mode doesn't matter, the app had none, and in this case the new Tesla comes with new hardware that provides a different and arguably better "autopilot" but the software would trail the release of the hardware.
Right but portrait mode didn't exist before iPhone 7+ iOS 10.1. They didn't take away anything and then give it back, they simply added that new feature after the iphone7+ was released. It wasn't just a standard optical focus feature that the iPhones had previously. It is using software to identify the subject and blur the background to give the effect of a dslr camera when shooting a portrait photo with a low aperature setting.
This is analogous to the Tesla example, new hardware no software.
The fact that the 7+ has a different portrait mode doesn't matter, the app had none, and in this case the new Tesla comes with new hardware that provides a different and arguably better "autopilot" but the software would trail the release of the hardware.