I don't know how many people here listen live to a certain tech podcast which has been receiving information from someone claiming to be at Apple, but a few things said in the live recording chat (which I didn't previously know) might be of interest. The nMP's graphics cards are entirely fabbed by AMD Nvidia's price to do the same thing was around $2000 more per machine (sounds like "go get stuffed" pricing). Thunderbolt 3 monitors which have a graphics card in the screen are in testing (though that's never been a guarantee of a product). the Nvidia web driver isn't being done as per the specs Apple wants driver makers to follow, installing in /system (replacing the factory driver?) rather than /library, and this is a pretty major sore point at Apple, described as being due to a lack of respect for the platform. I've got no real knowledge of how drivers work for the newer Nvidia cards, but I'd be interested to see what people who are knowledgable about using / installing them think of this. The TB3 monitors thing is interesting, and I have to wonder if eGPU support will be with TB3's release, and whether it will be restricted to Apple's display. I'd have to imagine that would either royally annoy all the third party display makers, or lead to a bonanza of hastened replacement cycles. Of course, this (edit the "reveals" by the "Apple person") may all be an epic troll so appropriate skepticism is healthy.