Acquia has a blog series on Drupal 8 that may be of interest.
Summary blog page on Drupal 8:
https://www.acquia.com/blog/drupal-8
Ultimate Guide to Drupal 8 episode summary (will be 8 episodes, 6 have been done as of 2014-09-04)
https://www.acquia.com/tags/ultimate-guide-drupal-8
Episode 1 - Authoring Experience Improvements
https://www.acquia.com/blog/ultimate-guide-drupal-8-episode-1-authoring-experience-improvements
Episode 2 - Mobile Improvements
https://www.acquia.com/blog/ultimate-guide-drupal-8-episode-2-mobile-improvements
Episode 3 - Site Builder Improvements
https://www.acquia.com/blog/ultimate-guide-drupal-8-episode-3-site-builder-improvements
Episode 4 - Multilingual Improvements
https://www.acquia.com/blog/ultimate-guide-drupal-8-episode-4-multilingual-improvements
Episode 5 - Front-End Developer Improvements
https://www.acquia.com/blog/ultimate-guide-drupal-8-episode-5-front-end-developer-improvements
Episode 6 - New Back-End Features in Drupal 8
https://www.acquia.com/blog/ultimate-guide-drupal-8-episode-6-new-back-end-features-drupal-8