Prepare Yourself for the Coming New Datums with a Refresher from NEURISA - YouTube
www.youtube.comHere's a video with information on the new datums coming in 2022 - there are already epochal updates to existing datums that help deal with little things like continental drift, but this sounds like something bigger (akin to the NAD27 to NAD83 shift). Worth watching at some point if you work with GIS!