Safety harnesses in accordance with 1988 FIA Standard 8853/98 will not be valid from 31.12.2022.
As from 1.1.2023, cars in compliance with any article of Appendix J must have a safety harness installed in compliance with FIA Standard 8853-2016.
Please note that historic cars in compliance with Appendix K may be authorized to use a safety harness in accordance with FIA Standard 8854/98 [4-point mounting] or 8853-2016 [6 point mounting], depending on the class.
The full FIA bulletin is here: