It had been in the works for a while, but now it has formally been adopted. From the article:
The regulation provides that by 2027 portable batteries incorporated into appliances should be removable and replaceable by the end-user, leaving sufficient time for operators to adapt the design of their products to this requirement.
Samsung used to make the “Active” lne of Galaxy phones which were waterproof shock resistent and had removable backs and batteries and a way for the phone to detect if the back was properly sealed.