I kinda like this link better
http://airflow.apache.org/blog/airflow-two-point-oh-is-here/* Fully specified REST API (AIP-32)
* Massive Scheduler performance improvements
* Scheduler is now HA compatible (AIP-15)
* Task Groups (AIP-34)
* Refreshed UI
* Smart Sensors for reduced load from sensors (AIP-17)
* Simplified KubernetesExecutor
* Airflow core and providers: Splitting Airflow into 60+ packages: