The IETF just published QUIC as RFC 9000, supported by RFC 9001, RFC 9002, and RFC 8999. That means QUIC version 1 is officially formalized, and QUIC deployments will now move away from using temporary draft versions to the newly minted version 1. (HTTP/3, the version of HTTP that runs on QUIC, is following closely behind, and should be published soon.)

https://www.fastly.com/blog/quic-is-now-rfc-9000