# Apache Airflow 2.4.0 — Release & Upgrade Intelligence
- **Product:** Apache Airflow (https://airflow.apache.org)
- **Version:** 2.4.0
- **Released:** Sep 19, 2022
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/airflow/updates/2.4.0/

## Executive Summary (TL;DR)
Apache Airflow 2.4.0. Source highlight: Add Data-aware Scheduling (https://github.com/apache/airflow/pulls?q=is%3Apr+is%3Amerged+label%3AAIP-48+milestone%3A%22Airflow+2.4.0%22)

## New Features
- Add Data-aware Scheduling (https://github.com/apache/airflow/pulls?q=is%3Apr+is%3Amerged+label%3AAIP-48+milestone%3A%22Airflow+2.4.0%22)
- Add ``@task.short_circuit`` TaskFlow decorator (#25752)
- Make ``execution_date_or_run_id`` optional in ``tasks test`` command (#26114)
- Automatically register DAGs that are used in a context manager (#23592, #26398)
- Add option of sending DAG parser logs to stdout. (#25754)
- Support multiple ``DagProcessors`` parsing files from different locations. (#25935)

## Improvements
- Update zombie message to be more descriptive (#26141)
- Only send an ``SlaCallbackRequest`` if the DAG is scheduled (#26089)
- Promote ``Operator.output`` more (#25617)
- Upgrade API files to typescript (#25098)
- Less ``hacky`` double-rendering prevention in mapped task (#25924)
- Improve Audit log (#25856)

## Bug Fixes
- Patch ``getfqdn`` with more resilient version (#24981)
- Have consistent types between the ORM and the migration files (#24044, #25869)
- Disallow any dag tags longer than 100 char (#25196)
- Add the dag_id to ``AirflowDagCycleException`` message (#26204)
- Properly build URL to retrieve logs independently from system (#26337)
- For worker log servers only bind to IPV6 when dual stack is available (#26222)