Your best move? Go to iso.org, purchase the official PDF (or a 24-hour subscription), and have the correct, authoritative document. If you simply need to know the key changes, use this article as a starting point, then buy the standard for your final design work.
Some university libraries offer digital access to standards for students and researchers via subscription services. Key Highlights of ISO 14644-4:2022 Iso 14644-4 Pdf Free Download UPD