- Fixed numerous bugs including scheduler heartbeat timeout, connection editing loss, BaseOperator kill handling, task notes refresh, and memory issues in large log reading.
- Added support for self‑signed certificates for API server communication and improved log redaction safety.
- Updated documentation (DAG author terminology, architecture diagrams, self‑signed cert setup) and added a deprecation notice for using Connection models in favor of the SDK.
Airflow 3.0.4
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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.