The ALA Core SAC Subcommittee on Faceted Vocabularies (SSFV) is pleased to share Version 1.0 of the document Best Practices for Recording Faceted Chronological Data in Bibliographic Records, now available via the ALA Institutional Repository: https://alair.ala.org/handle/11213/16710. This revision was prompted by community feedback on Version 0.9, released for comment in 2020.
An OCLC bibliographic record is also available for this publication: OCLC #1271107380.
There are no fundamental changes to the best practices, but there are abundant clarifications, several additional examples, and other refinements. To name a few areas with additional/enhanced language (list not comprehensive):
A word about the aforementioned 046 changes approved by MAC: these changes are newly valid in OCLC Connexion (with the September 2021 WorldCat validation update described here). SSFV plans to revise the chronological best practices again, to recommend methods for utilizing the new 046 1st indicator values in order to distinctly encode dates for works and expressions. Stay tuned for further updates to this resource!