QUIC and HTTP/3 are open standards that have been under development in the IETF for almost exactly 4 years. On October 21, 2020, following two rounds of Working Group Last Call, draft 32 of the family of documents that describe QUIC and HTTP/3 were put into IETF Last Call. This is an important milestone for the group. We are now telling the entire IETF community that we think we’re almost done and that we’d welcome their final review.

https://blog.cloudflare.com/last-call-for-quic/