A new rumor today claims Apple is going to introduce yet another new feature when it launches this year's iPhones in the fall, and it's one that Samsung flagships have had since the Galaxy S8. Samsung calls it Dual Audio and what it does is easy: allow you to stream audio to two Bluetooth accessories at the same time. A lot of smartphones can connect to two accessories at the same time, but those accessories have to be using different Bluetooth profiles. So you can have two headphones connected, for example, but use one only for calls and one only for media. Apple is reportedly...