Webdriver for GTX 1080&1070

I have a macpro 3.1 from 2008, i've been wanting to replace my HD6850 with a better graphic card.
this afternoon i saw a post on this site:
http://solove.love/macos-10-12-beta-16a201w-nvidia-webdriver-367-05-10-05b03.html
indicating webdriver can now support gtx 1080. without thinking i soon ordered a GTX1070 online for almost $530 USD( i know the price in my country is ridiculous, gtx1080 is 816 USD), it will arrive within 24 hours.

Few minutes ago some people told that the...

Webdriver for GTX 1080&1070