Foreign media said iPhone 8 will be equipped with 3D laser scanning

According to the US business magazine "Fast Company" 
IPhone 8 will be equipped with 3D laser scanning, to enhance the practical application to provide in-depth detection. In addition, this module can make the auto focus more accurate.

IPhone 8 rear camera will be used as a VSCEL laser system. The system is placed on the back of the fuselage, which can achieve faster camera focus by laser ranging. In addition, it can achieve more accurate depth detection, services in AR applications. 
This VSCEL laser system for the rear camera is likely to be used on the iPhone 8, but whether it can come true, and finally depends on Apple's integration into the iPhone.