Google has begun sending webmasters and publishers notifications via the Google Search Console that they should begin looking to make AMP (accelerated mobile pages) for their news site. The notification says "implement accelerated mobile pages (AMP) for...:
It goes on to explain that Google has detected that the site is news oriented and the site "might benefit from enhanced exposure on Google Search" if you go ahead and implement the AMP guidelines. It then goes through tips on how to do so and verification processes.
Here is the email Glenn Gabe got for one of his clients from Google with this notification:
AMP should be launching in about a month and Google is pushing it really really hard. For more on AMP, see here.
Forum discussion at Twitter.