From theregister.com
Open-source CMS software Drupal has unveiled its first major update in five years by launching a new version 9.0.
The biggest update is backwards-compatibility from version 8.0: the project’s developers have styled the upgrade as not much more complex than adopting a point release.
“If you’ve kept your Drupal 8 site up to date, and have experience with updating your site to the latest minor version (e.g: 8.9.0) then you know everything you need in order to successfully upgrade to Drupal 9,” says the release FAQ.