- Extensive bug‑fix release covering race conditions, log handling, DB migrations, and executor issues across Airflow core and providers.
- Documentation updates and clarifications for TaskFlow API, KubernetesExecutor pod templates, OS support, and example DAGs.
- New small features: xcom clearing on task retries and default template image for KubernetesExecutor.
Apache Airflow 2.2.3
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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.