A Make It Happen page (now closed) has been set up for getting CiviCRM ready to roll when Drupal 8 hits the stores.
This Make It Happen is for $10,000 to fix breakages as the final release candidates of Drupal 8 roll out (such as dealing with Symfony conflicts), and setting it up to work with BuildKit so we can provide a Demo site as part of the civicrm.org set of demo sites.