This is great release, it fixes the long standing bug [1] of memory leak in celery beat for periodic tasks.
This combined with flower [2] provides a simple platform to build powerful platform for data integration with real-time and scheduled long running jobs. Apache Airflow also use celery for distributed execution of tasks and jobs.
[1] https://github.com/celery/celery/issues/4843 (fixed in 5.0 will be backported to 4.x).