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.
Back in the day when the battery of my Samsung Galaxy S (The original one) went bad I bought a replacement off Amazon for 15 bucks or so. The new battery even had a higher capacity than the original one! Popped the cover off the back of the phone, old battery out, new in, cover back on, done. Phone was better than new afterwards.