Belarus becomes first country to make IPv6 mandatory for ISPs Starting January 1, 2020, Belarusian ISPs will have to enable IPv6 support for all customer connections September 23, 2019 https://www.zdnet.com/article/belarus-becomes-first-country-to-make-ipv6-mandatory-for-isps/
I think the U.S. will be one of the last places to roll it out. I do not have access to IPv6 at home or work. Fiber optic both places. Gigabit at work. That said I don't think I'm missing anything.