At next WWDC Apple has to reveal its cards about VR, AR and some of their base technologies, like Metal v2. Current Metal is buggy and incomplete, it doesn't support even Shader Model 5.0 let alone asynchronous graphics/compute with multi-GPU environment - current version is just a developers playground. Also, DSP audio support is essential for VR. AMD mentioned TrueAudio Next in their yesterdays slides.
So these key-tech features should come with OS X 10.12 "Disneyland"
(just came up with that name, but hey, it's American landmark and original VR concept, and sounds better than El Captain). Same time Apple launches beta versions of Final Cut VR and Logic Pro VR. Works only with Metal v2 and TrueAudio next.
After yesterdays AMD slides and demos, I'd say that in WWDC we'll see MP v2 (if tube concept stays):
- Broadwell EP
- DDR 4
- Duo Polaris 11 4GB and Duo Polaris 10 8GB with TrueAudio next (no more third GPU option)
- USB type-c with TB3 and DP 1.3
Apple's consumer VR gadgets could come Q4/15. With Zen and Vega.