I sure hope this is true. BT has been fairly stable in most cases, but for some reason my iPhone has not been able to properly connect to my audio system in my 2015 Toyota RAV4. It connects as soon as I turn on the RAV4, but it places the phone off the hook and I cannot hang up. So I've had to deactivate the BT connection between the RAV4 and my iPhone 6 Plus. So no hands free use while driving. I'm not totally sure if this is an iOS 10 issue or something else, but it did start happening about the time I updated from iOS 9.x.x. However, I also got a Garmin vivosmart HR fitness watch about that time too and it stays connected to my iPhone as well. I know the vivosmart HR does mess up the connection with a BT headset I have, so it could be the vivosmart HR causing the issue. I tried disconnecting it though, and the issue with the RAV4 persists.