I agree that they should adjust the info in the Google Playstore if that info isn't correct. They do mention 7.0 in their manual. For the time being I would suggest to use the phone of somebody that you know that has 7.0 or iOS 10.
By the way, my colleague has placed his DB2 behind the left speaker and it sounds great. It sounds perfectly integrated with his 804's. Very easy to switch the calibration on and off, so it's easy to hear what the calibration has for an effect