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.
Always possible, and given the choice between a phone without a replaceable battery vs [functionally] the same phone with one I’ll always take the latter, but consumer battery tech has moved at a glacial pace compared to screen tech. Samsung plays in both industries though so maybe this’ll light a fire for them to speed up battery development.