Part of the existing ‘Understanding Drupal’ content got migrated into the new documentation system as ‘Choosing Drupal version‘ for Drupal 7.
We need to create similar guide for Drupal 8. The guide itself exists: https://www.drupal.org/docs/8/choosing-a-drupal-version, but it is empty.
– Sign up as a maintainer for D8 Understanding Drupal guide
– Review D7 Understanding Drupal guide content and copy information that is relevant for D8 into D8 guide
– Add D8 specific information to the new guide