Upon reading the slide, I think it is clear this isn't really an Apple requested product at all.
Not only is this a EMIB showcase, but also about Intel Vs Nvidia. This Kaby-Lake G is striking Nvidia where it hurts most, Gaming Market, Especially Notebook Gaming market which is the segment that is growing and slowing the PC shipment decline.
Why? The Gaming Market profits are being used to fund HPC and AI R&D, market which Intel is desperately trying to win.
It will be interesting to see how Intel price this, and how AMD will price their upcoming APU.