Updated with sound clip from Zfatuated. 
This is Zfatuated's commentary on the sound -- "There is a 'Vette behind it and the Camaro sounds about a thousand times better than the Vette, I am not joking. It is throaty as hell. Upon reflection, some of it could have been induction noise as well as exhaust, intake air can be very loud. Regardless, it sounded
awesome, it is going to be another great car to look forward to."
Admin note: the photos used are from this earlier prototype sighting
at the Nurburgring -
http://www.camaro6.com/forums/showthread.php?t=379197
Also see our previous clips from the Nurburgring of the 2016 Camaro during track testing: