The Themers of Drupal have for years been whining & moaning over the bad markup, confusing theme functionality, Drupals lack of separation from the frontend to the backend and generally WTF when you work in the frontend. Now in Drupal8 The Dark ages of Drupal Theming is gone (foreva!) phptemplate is put on the bench and is replaced by "a modern tempting system": TWIG. This session will show in both practical examples & on a broader base why TWIG will rock the themers world in Drupal.
Developers are welcome at this session - but the focus & view on this session is based from the world of the frontend ;)