New Features

• Support annotations on volumeClaimTemplates (#23433)
• Add support for topologySpreadConstraints to Helm Chart (#22712)
• Helm support for LocalKubernetesExecutor (#22388)
• Add securityContext config for Redis to Helm chart (#22182)
• Allow annotations on Helm DAG PVC (#22261)
• enable optional subPath for DAGs volume mount (#22323)
• Added support to override auth_type in auth_file in PgBouncer Helm configuration (#21999)
• Add extraVolumeMounts to Flower (#22414)
• Add webserver PodDisruptionBudget (#21735)

Improvements

• Ensure the messages from migration job show up early (#23479)
• Allow migration jobs and init containers to be optional (#22195)
• Use jobs check command for liveness probe check in Airflow 2 (#22143)

Doc only changes

• Adds resultBackendSecretName warning in Helm production docs (#23307)

Misc

• Update default Airflow version to 2.3.0 (#23386)
• Move the database configuration to a new section (#22284)
• Disable flower in chart by default (#23737)