Wireless networking, collision detection, and spatial sensing in the headset itself.
Source. They aren't working on the VR graphics hardware (the part that requires graphics patents going forward) at all. Intel relies on AMD and NVIDIA GPUs to provide the graphics muscle.
You're thinking too much about graphics as that's just a tiny part of the VR/AR problem. GPU performance grows anyway, while a lot of things have to be designed from scratch.
E.g. it seems Intel will be the company that takes us from wired to wireless VR helmets, which was one of the issues needed to be solved before VR gets mainstream.
Overall, if you look at current VR helmets (including the most popular ones from HTC and Oculus), they have so much Intel tech that they should get the "Intel inside" sticker.
Intel seems to be more into AR anyway (this being possibly more profitable and for sure way more important).
If Apple does something crazy, it will be combining GCN with an Apple (ARM-based) processor. I don't think it's far fetched that Apple would turn iMac into a desktop tablet (iOS) with significant GPU grunt to power a 5K-8K display ending support for OS X entirely. That fits the Apple pattern perfectly.
I think it's the opposite. It's almost certain Apple will go for an in-house GPU in their mobile stuff soon (iPhone, iPad). This could stretch to the Mac mini.
Nothing is stopping them from making something for notebooks/desktops as well.
As for CPUs, keep in mind that for MacBooks they need an IGP. Currently available single CCX
desktop Ryzen performs similarly to a
mobile i7-7920HQ (at 1/3rd of the price, but that is not an issue in Apple world). We'll see what a mobile variant can do.
And then there's again the single-core performance issue, which is very important for productivity software and Apple won't sacrifice it.
The way AMD currently bins Ryzen, 1800X beats 1500X in single-core benchmarks. They would have to reserve the best chips for APU to make them acceptable.
I guess you don't really know much about the history of tech? (...) Highly unlikely today, but keep in mind that there have been rumours about Apple making their own notebook CPUs for some time
Why would Apple make their own CPU? They've dumped them years back which is one of the reasons MacBook and Mac Pro got so much market share. It improved compatibility and gave them access to the best fabs. Designing a CPU would be a huge step backwards.
I think you're confusing this with the rumor that Apple aims at a dual-CPU setup for future notebooks, when a smaller Apple-designed ARM chip runs the MacOS and simple tasks (and the big one kicks in only for demanding tasks). Actually they already have the hardware: current MacBook Pro has an additional ARM chip to operate the touch bar. Replacing it with A10X would provide enough power to run the OS. Coincidentally, we had rumors that Apple wants to unify their OSes, so they could go for ARM (Microsoft does this also, but has chosen x86).