We did a walkthrough this afternoon on our new 2016 Pinnacle. We added the camera option as well when we ordered it. We received the Voyager- WVOS511 Digital Wireless Observation System. If you would like to read more about it..
The web site is located at: Digital Wireless Observation System featuring WiSight Technology
We did turn it on and plugged into the master bedroom for a test to make sure it was working. We were pleased to see and hear that a microphone is built into the camera and when you adjust the volume on the monitor is was pretty clear to hear a normal speaking voice. I think it will be great when you have a spotter back there helping you get into a spot.
Will share more if others are interested...