There is a new build now. Most important changes:
- Brush selection popup
- All paint modes, including grease pencil and image editor should work now
- Operator to edit brush asset metadata
- Default shortcuts for brushes
Missing things before we can consider this ready for merging into main.
- Type to search and better catalog handling in brush selection popup
- Ability to edit icon along with other metadata
- See the task for a more complete list