Adele did previously say that she was done naming albums after her ages. However, she also said, "I feel like the idea of calling albums after my age is showing a photograph almost of what’s going on in my life then and there. I feel like not that much is going to change profoundly in me from now on in terms of how important eras of my life are to myself" — it's not unbelievable that Adele may have felt a profound change in recent years.