You've probably seen this floating around the listservs, but if not:
https://www.acs.org/pressroom/newsreleases/2023/september/acs-publications-provides-new-option-to-support-zero-embargo-green-open-access.html

To ensure a sustainable model of delivering services from submission to final editorial decision, ACS Publications is introducing an article development charge (ADC) as part of this new zero-embargo green open access option.

Sally Rumsey provides a critique over at the Coalition-S blog:
https://www.coalition-s.org/blog/american-chemical-society-acs-and-authors-rights-retention/

--
Timothy Vollmer (he/him)
Scholarly Communication & Copyright Librarian
University of California, Berkeley
Doe Library, 189 Annex
Berkeley, CA 94720