Does Oticon Opn allow me to stream calls directly from an iPhone like the Linx or Halo aid?

Yes, Oticon Opn works with iPhone. You can stream phone calls and audio directly to the hearing aids from iPhone 5 and 6 devices. There is also an app that can be downloaded to iPhone, as well as several android devices, that will allow the user to adjust their Opn hearing aids for various environments. The app includes a way to track your hearing aids if they are misplaced.

Yes, the new Oticon product is iPhone compatible and will stream through both ears as the Resound and Starkey products do. An iPhone 5 or greater is needed to accomplish this.

Yes it does.  The app is just OK, it doesn't give you the level of control that the Halo2 and Linx2 does.  The OPN only comes in one level of technology now, which is top of the line and only one style RIC. 

Yes.

Fun Fact: It also can connect to the IFTTT app and when the battery doors closes in the morning your coffee machine will start making coffee for you! 

Yes

Yes!  As long as your iPhone is a 5 or newer the Opn instrument functions the same way as the Linx or Halo instruments.  You can stream phone calls and any other audio from your phone directly into the hearing aids.  Good luck!