Hmm, apparently they don't have to start until 2017 (after looking into the (2014) EU directive, it's still unclear to me the timeline of events leading to MicroUSB adoption and how it is enforced)
Does that mean all type C phones will need an adapter too?
What? Yes they do! I unpack dozens of iPhones and Macs at work each year and a charger is included every time. Now, I think this just might be a terminology mix-up as a charger is technically not an "adapter", but e.g. where I live the words are often both used for a charger. I suspect that this is what the parent comment meant.
Ah. Yes, I thought that by "adapter" OP meant micro-usb to lightning adapter, which is available, but not bundled. The charger is, of course, included in the box.