d4: Status Report on the Third Round of the NIST Post-Quantum Cryptography Standardization Process (pdf 1.66MB)
d4: "NIST expects to execute the various agreements prior to publishing the standard. If the agreements are not executed by the end of 2022, NIST may consider selecting NTRU instead of KYBER." NIST IR 8413 Footnote 6, Page 18.