Use it for questions about moving from a major release of Drupal to the next.
The process of upgrading to the latest version of Drupal can vary in difficulty depending on the complexity of a current installation.
Any Drupal upgrade has these general steps:
- Preparing your current site for upgrade.
Some (great) questions using this tag (or which should be using it):
- Developing modules for Drupal 8 / Converting from D7 to D8.
- How to troubleshoot errors after successful Drupal update?
- D7 version of theme not working as in D6.