Almost all the specifications of Redmi 6 Pro have been leaked already, Xiaomi know this very well and itself leaked several sample images of Redmi 6 Pro camera
Redmi 6 Pro sample photos
The images are compressed a little but we can still get an idea of the dual camera setup of Redmi 6 Pro. Xiaomi Redmi 6 Pro camera is leaked to have 12MP main sensor and a 5MP lense for depth sensing. The front-facing camera is 5MP. The camera software has some AI smarts, including AI beauty mode and AI portrait mode.
Source (in Chinese)