An overview of the main changes to the Drupal 8 theming layer, with a collection of technical details that can help you begin working on a Drupal 8 site.
With community keynotes presenting PhD findings from research on the Drupal community and a discussion on the importance of everyone's mental health, it was a welcome change in approach to the standard keynote sessions.
Drupalcon continues to inspire me with the innovation and creativity of the community, from Drupal 8 to Self Managing Organisations, there is much to be excited about.