- Introduces a service‑oriented architecture, a modern React UI, and enhanced security.
- Adds major features like DAG versioning, improved backfills, event‑driven scheduling, and remote execution support.
- GA of Airflow 3.0— a major version that may include breaking changes for existing deployments.
Airflow 3.0.0
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Updated XCom handling for pandas 3, now storing the class name; all components must be upgraded or DataFrames from pandas 3 become unreadable.