Thanks for sharing this article Tomasz.

These new features from version 2.0 are definitely awesome. I'm especially excited about the TaskGroup, to replace the Subdags. Since the Subdags have some weird behavior and bugs with MySQL.

I see the Xcom Backend as a powerful feature also. And I also see we shall want to use different Xcom Backends for different DAGs (a DAG can write Data in a GCloud and another in an S3 for example).

This was what I thought first reading the section, to be honest. This is a suggestion for future releases =]