The new Government of Canada GC Design System (GCDS still in Alpha) is maintained by Canadian Digital Services (CDS). This new GCDS is premised on Web Components, see their components page for detailed documentation, including links to their github.

Drupal GCDS is open source (on Drupal.org), and will be released fall 2024 (also as an alpha).

Drupal GCDS will be a base theme only, which will include GCDS theme as well as Drupal Single Directory Component (SDC) now core as of 10.1.

Extending Drupal builds will now be done using the new Drupal recipes (core as of 10.3). This will replace distribution, allow for more feature specific installs, include module subsets, configs and sample content. The recipes vanish after being applied, there will no longer be a distribution profile. Instances need to be maintain directly.