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 don’t know the current state, my Galaxy S4 mini was shipped with android 4.3 and it never even got 5 from Samsung. Custom rims delivered but 6 wasn’t available at all (plus the hardware struggled at that point).