So the AMP project just launched (with apparently unclear benefits and future outlook) and already BBC and BuzzFeed are publishing content using it. Did Google specifically work with them on it? What are they getting from supporting it now? Are they just being paid?
I expect that they've worked with people to figure out what makes the most sense to actually build and so the BBC and Buzzfeed would have had a bit of time before the announcement to start making the pages.