November 12, 2025 is the effective date for the updated v2.0.5 of the CABF Network and Certificate System Security Requirements (NCSSRs). Conformance with the NCSSR is required by Section 6.7 of the S/MIME BR.
See NCSSRs at https://github.com/cabforum/netsec/blob/main/docs/NSR.md
Best, Stephen