Improves the handling of value masking when setting Airflow variables for enhanced security. (#43123) (#43278)
Adds support for task_instance_mutation_hook to handle mapped operators with index 0. (#42661) (#43089)
Fixes executor cleanup to properly handle zombie tasks when task instances are terminated. (#43065)
Adds retry logic for HTTP 502 and 504 errors in internal API calls to handle webserver startup issues. (#42994) (#43044)
Restores the use of separate sessions for writing and deleting RTIF data to prevent StaleDataError. (#42928) (#43012)
Fixes PythonOperator error by replacing hyphens with underscores in DAG names. (#42993)
Improving validation of task retries to handle None values (#42532) (#42915)
Fixes error handling in dataset managers when resolving dataset aliases into new datasets (#42733)
Enables clicking on task names in the DAG Graph View to correctly select the corresponding task. (#38782) (#42697)
Prevent redirect loop on /home with tags/last run filters (#42607) (#42609) (#42628)
Support of host.name in OTEL metrics and usage of OTEL_RESOURCE_ATTRIBUTES in metrics (#42428) (#42604)
Reduce eyestrain in dark mode with reduced contrast and saturation (#42567) (#42583)
Handle ENTER key correctly in trigger form and allow manual JSON (#42525) (#42535)
Ensure DAG trigger form submits with updated parameters upon keyboard submit (#42487) (#42499)
Do not attempt to provide not stringified objects to UI via xcom if pickling is active (#42388) (#42486)
Fix the span link of task instance to point to the correct span in the scheduler_job_loop (#42430) (#42480)
Bugfix task execution from runner in Windows (#42426) (#42478)
Allows overriding the hardcoded OTEL_SERVICE_NAME with an environment variable (#42242) (#42441)
Improves trigger performance by using selectinload instead of joinedload (#40487) (#42351)
Suppress warnings when masking sensitive configs (#43335) (#43337)
Masking configuration values irrelevant to DAG author (#43040) (#43336)
Execute templated bash script as file in BashOperator (#43191)
Fixes schedule_downstream_tasks to include upstream tasks for one_success trigger rule (#42582) (#43299)
Add retry logic in the scheduler for updating trigger timeouts in case of deadlocks. (#41429) (#42651)
Mark all tasks as skipped when failing a dag_run manually (#43572)
Fix TrySelector for Mapped Tasks in Logs and Details Grid Panel (#43566)
Conditionally add OTEL events when processing executor events (#43558) (#43567)
Fix broken stat scheduler_loop_duration (#42886) (#43544)
Ensure total_entries in /api/v1/dags (#43377) (#43429)
Include limit and offset in request body schema for List task instances (batch) endpoint (#43479)
Don't raise a warning in ExecutorSafeguard when execute is called from an extended operator (#42849) (#43577)

Miscellaneous

Deprecate session auth backend (#42911)
Removed unicodecsv dependency for providers with Airflow version 2.8.0 and above (#42765) (#42970)
Remove the referrer from Webserver to Scarf (#42901) (#42942)
Bump dompurify from 2.2.9 to 2.5.6 in /airflow/www (#42263) (#42270)
Correct docstring format in _get_template_context (#42244) (#42272)
Backport: Bump Flask-AppBuilder to 4.5.2 (#43309) (#43318)
Check python version that was used to install pre-commit venvs (#43282) (#43310)
Resolve warning in Dataset Alias migration (#43425)

Doc Only Changes

Clarifying PLUGINS_FOLDER permissions by DAG authors (#43022) (#43029)
Add templating info to TaskFlow tutorial (#42992)
Airflow local settings no longer importable from dags folder (#42231) (#42603)
Fix documentation for cpu and memory usage (#42147) (#42256)
Fix instruction for docker compose (#43119) (#43321)
Updates documentation to reflect that dag_warnings is returned instead of import_errors. (#42858) (#42888)