- Extensive bug fixes across core components (e.g., JWT token handling, DAG hash consistency, backfill race condition, LocalExecutor memory spike, TriggerRunner timeout, serialized DAG write atomicity).
- UI stability and usability improvements, including rendering fixes, responsive layout, secret redaction, tag handling, and corrected duration calculations.
- Documentation enhancements covering translations, migration guide for Airflow 2 users, TaskGroup parameters, secret masking, and installation from source.
Apache Airflow 3.1.5
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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.