The RFC proposed standard is now available on the IETF Datatracker (see link below).

About the QSC Atlas:
“ML-KEM is a key encapsulation mechanism (KEM) defined in [NIST-FIPS-203]. It is designed to withstand cryptanalytic attacks from quantum computers. [RFC9954] defines a framework for combining traditional key exchanges with next-generation key exchange in TLS 1.3. The goal of this approach is to provide security against both classical and quantum adversaries while maintaining compatibility with existing infrastructure and protocols. […]

This document introduces three new supported groups for Post-Quantum Traditional (PQ/T) hybrid key agreements [RFC9794] in TLS 1.3 — X25519MLKEM768, SecP256r1MLKEM768, and SecP384r1MLKEM1024 — that combine ML-KEM with Ephemeral Elliptic Curve Diffie-Hellman (ECDHE) in the manner described in [RFC9954]. Any of the hybrid groups specified in this document may be implemented in a FIPS-approved way as discussed in Section 5. […]”