If the gaming focus is as strong as implied, odds are the SHIELD interface will just be another input rather than the driver.
NVIDIA isn’t manufacturing the TVs themselves, they’re probably just going to do what they do with GSync, give OEMs a box and say “Hook it up to this type of connection and we’ll certify it”
https://www.geforce.com/whats-new/articles/bfgd-big-format-g...