See last link for the details about the following highlights since 9.1.0:
- Show formatted severity in wd:one (#3362)
- Add entity:delete command (#3365)
- Fix #3009. Document setting Drush config values via environment variable.
- Add --result-file-auto to save to a date-based filename under ~/drush-backups directory (#3370)
- Minor tweaks to pm:security
- #3383 - fix label not being used for drush config:import command (#3384)
- Fixes #3385: DrushArgvInput must extend ArgvInput. (#3388)
- Use Drupal’s Installerkernel in site:install (#3390)
- #3392 use canonicalized file paths for config import sync dir (#3393)
- Support a new phase value when with
@bootstrap maxannotation. Improves sql commands (#3397) - Fixes #3306: Make sure that rsync with %files resolves correctly (#3405)
- Fixes #3394: make sure that site alias manager is inflected for command objects that need it. (#3406)
- Fixes #3127: Non-interactive invoke via 'drush @alias cmd' (#3407)
- Changes since 9.1.0.