If AR/VR does become mobile, and comes to iOS (or its successor), I wonder: what is the base dev knowledge that will be truly useful to have for that as an indie developer?

VR and Apple…Like many I’m growing impatient for updates on the MBP/iMacs. It seems likely the top end will be VR capable, probably with AMD Polaris chips. This leads me to wondering, how far is VR capability from iOS and mobile?