If this runs a version of iOS, we can't access the code that is running in it, we can't open a terminal, we can't use our programing language of choice. We can't use the actual device for building anything hacker related by itself.
We can make apps for it using an actual PC made for building, but only if it runs MacOS, ans using their proprietary language. The actual device is far from a hackers dream or plaything if its as locked up as the iPhone. But very cool device though, hopefully it brings VR into Mainstram outside of gaming