Gentex has already had them out for the past 10 years. Honda started using their embedded LCD mirrors on the Odyssey if you wanted a backup camera but no navigation, Toyota used them on the Tacoma and Tundra. This one is a newer version with a wide-screen LCD but it lacks the electrochromic auto-dimming feature, hence the flip-down for the night like an regular mirror.
https://www.voxxelectronics.com/gentex/full-display-rear-view/
https://www.gentex.com/automotive/products/rear-blind-zone-assist
https://www.voxxelectronics.com/gentex/full-display-rear-view/
https://www.gentex.com/automotive/products/rear-blind-zone-assist