Please tell me about the "Digital Rear View Mirror".
It was packaged with the Longhorn Level 1 Equipment Group (HUD, Adaptive cruise, Digital Rearview, Blind spot, Power running boards, updated audio, Surround view cameras, Sprayed bed, Wireless charging). Can be had in other trims with various packagings.
Basically, it displays a live image on the rearview mirror from a rear facing camera located externally at the back end of the cabin near the top. A button on the mirror housing allows you to switch between the display and a regular reflective mirror view.
Superfluous for the most part and not worth a retrofit, in my opinion, unless one is bent on getting a tri-fold bed cover or install a bed rack that would obstruct rearview but not high enough to obstruct the camera.
Assuming, of course, you're not this guy