IMO, I wouldn't read too much into this. Maxwell cards were never officially supported - Huang would have said the same thing back then and probably still would now. The support came in the driver version number - basically tucked away. Huang can't come out and say "Yeah Nvidia will support cards that aren't officially licensed Apple hardware". That would NEVER happen and has never been publicized. I can guarantee Apple had ZERO part to do with previous web drivers like Huang described needing for Pascal. There was never a Maxwell chip in an Apple machine and they were 100% supported in later driver versions under the radar. Remember officially these are beta drivers for chips present in Mac machines, nothing else. The beta drivers officially only publicly support the following cards: GeForce GTX 680, GeForce GTX 285, GeForce GT 120, GeForce 8800 GT, Quadro K5000 for Mac, Quadro 4000 for Mac, Quadro FX 4800, and Quadro FX 5600. It has been a gift that we had support for newer cards. It also took around 6 months for support for Maxwell... The last supported Nvidia chip in an Apple machine was the Nvidia 780M - that was Kepler. They are still updating drivers with every OS X update therefore they have the source code they need to publish them. That is promising to me.
I think a more appropriate question for this Richard Goga to have asked is if drivers above 368.whatever would be released as the Beta version for Mac, ignoring the Pascal identifier. Before everyone starts throwing their 1060/1070/1080s on eBay, lets just take a step back and take the wait and watch approach a bit longer. 10.12.2 should be out in a couple of weeks...