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.
Don’t necessarily think of the solution as opening them.
The solution could hypothetically be that the stalks (that contain the battery) are modular and replaceable. They could snap to the bud part with some kind of ‘mini-magsafe’ connector.