Unity 5.2.3 is out !!

Also UnityEngine.VR.VRSettings.enabled is still completely useless. Using it can cause a lot of editor crashes and setting it to false doesn't actually turn the display off or even blank it, it just shows the last rendered frame frozen in place. There doesn't appear to be any way to have an app start with the HMD turned off, short of using command line arguments which disable VR completely.

The target eye none feature is for displaying a different camera view in the main window, rather than the VR mirrored view.