End of Unity & Ubuntu Touch

Mark Shuttleworth just announced, that Ubuntu will default to GNOME again starting with 18.04 LTS.
Ubuntu Insights post: https://insights.ubuntu.com/2017/04/05/growing-ubuntu-for-cloud-and-iot-rather-than-phone-and-convergence/

Previously this article contained some migration hints, these are now moved over to another article - https://gsantner.github.io/linux/2017/04/08/ubuntu-migration-look-feel/