there is a version for QUIC/HTTP/3 https://www.rfc-editor.org/rfc/rfc9220.html

one big difference is that http/3 has built in scheme for multiplexing connections so this is quite cool for nostr as it means you could auth on one stream and bind it to the multiplexed connection and not need to auth for each stream - most clients start up multiple sockets, 2 or 3 at least often sit open for an hour or more if you walk away