Looking at the recent leak about the upcoming iPhone 8, it seems like they are experimenting a lot of new features for the iPhone 8. According to the recent firmware leak about the iPhone 8 confirms that the iPhone 8 will support wireless charging & fast charging technology.
This confirms that Apple is now listing to the consumers expectation. Apple was recently working to solve their software issues for 3D sensor, as they are working to introduce Augmented Reality on their iPhone 8. Also Apple were testing some ARKit that ensures improvement on the camera for video makers.
We are also expecting that the iPhone 8 might support 5G technology, but not yet sure if this is going to be in the iPhone 8 or the next iPhone.
We are not yet sure about the release as there is no confirmation about it, but the rumors says that the phone might get launched sion in Q4 (Many be this month or soon in September).