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.
I’m pretty tech savvy and I can’t say that it’s a feature I particularly care about. I carry a battery pack with my for various devices and by the time my battery is dying, it’s time for a new phone anyway.