Python 3.7 was just released, and 2.7 is to reach end-of-life/sunset in 2020 after they already gave it a five year extension. As the linked PEP 404 makes clear, there will be no 2.8.
Several recent conversations indicated that none from that small sample have actual plans to migrate. Google App Engine still offers 2.7, for instance, further feeding the addiction.
I wonder whether the inevitable migration could become an opportunity to get other languages in the door at companies like that-- e.g., those using App Engine on 2.7. Yes, most will take the path of least resistance and go to 3.x with business as usual.
However, will some turn this into an opportunity at their companies to overhaul now-legacy code? Change major frameworks? Perhaps consider newer languages like Rust or Elixir?