Has this feature come out yet? I am trading in my MBA because my iPad mini does everything I need, except connect to a projector well. I could buy the $50 dollar connector or I can get an Apple TV for $100. The problem is my work does not allow wifi therefore I can't airplay presentations. The cable means I can't move around the classroom. And the cable is ridiculous, half the price on an Apple TV. I know they were supposed to announce Airplay Direct (bluetooth) but haven't heard anything else since September.