# Apache Airflow 2.1.4 — Release & Upgrade Intelligence
- **Product:** Apache Airflow (https://airflow.apache.org)
- **Version:** 2.1.4
- **Released:** Sep 18, 2021
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/airflow/updates/2.1.4/

## Executive Summary (TL;DR)
Apache Airflow 2.1.4. Source highlight: Fix deprecation error message rather than silencing it (#18126)

## New Features
- Update version added fields in airflow/config_templates/config.yml (#18128)
- Separate Installing from sources section and add more details (#18171)

## Improvements
- Improve the description of how to handle dynamic task generation (#17963)
- Improve cross-links to operators and hooks references (#17622)
- Improves quick-start docker-compose warnings and documentation (#18164)
- Doc: Improve installing from sources (#18194)
- Improves installing from sources pages for all components (#18251)

## Bug Fixes
- Fix deprecation error message rather than silencing it (#18126)
- Limit the number of queued dagruns created by the Scheduler (#18065)
- Fix ``DagRun`` execution order from queued to running not being properly followed (#18061)
- Fix ``max_active_runs`` not allowing moving of queued dagruns to running (#17945)
- Avoid redirect loop for users with no permissions (#17838)
- Avoid endless redirect loop when user has no roles (#17613)