- Improved security with enhanced value masking for Airflow variables and suppression of masking warnings.
- Added task instance mutation hook for mapped operators, support for host.name in OTEL metrics, and env‑var override for OTEL service name.
- Fixed numerous bugs (executor cleanup, Windows runner, UI click handling, API pagination, scheduler loops) and deprecated the session auth backend with related documentation updates.
Apache Airflow 2.10.3
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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.