HTTP/3 is now enabled on the main proxy. Please check out this http/3 check to check out if your site supports HTTP/3.

A good video detailing the nerdy technical specs is here The Internet just changed.

I find it amusing that part of the motivation for the protocol is because “middleboxes”, that is Firewall, really suck and cause problems. The downside is of course that some firewalls and enterprises will simply block QUIC HTTP/3 completely, which misses the point.