# Apache Airflow 2.2.4 — Release & Upgrade Intelligence
- **Product:** Apache Airflow (https://airflow.apache.org)
- **Version:** 2.2.4
- **Released:** Feb 22, 2022
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/airflow/updates/2.2.4/

## Executive Summary (TL;DR)
Apache Airflow 2.2.4. Source highlight: Adding missing login provider related methods from Flask-Appbuilder (#21294)

## New Features
- Added explaining concept of logical date in DAG run docs (#21433)
- Add note about Variable precedence with env vars (#21568)
- Add documentation and release policy on "latest" constraints (#21093)
- Add a link to the DAG model in the Python API reference (#21060)
- Added an enum param example (#20841)
- Add note about reserved ``params`` keyword (#20640)

## Improvements
- Improve documentation on ``Params`` (#20567)

## Bug Fixes
- Adding missing login provider related methods from Flask-Appbuilder (#21294)
- Fix slow DAG deletion due to missing ``dag_id`` index for job table (#20282)
- Add a session backend to store session data in the database (#21478)
- Show task status only for running dags or only for the last finished dag (#21352)
- Use compat data interval shim in log handlers (#21289)
- Fix mismatch in generated run_id and logical date of DAG run (#18707)