Magnolia 6.0 reached end of life on June 26, 2019. This branch is no longer supported, see End-of-life policy.
The Magnolia UI 6.0 project is currently still under way and available as a Developer Preview.
To provide backward compatibility It contains all the classes existing earlier and comes with refactored frameworks and new functions.
We are doing our best to finalize the project as soon as possible.