dhtmlxGantt 2.0 - beta documentation

You can check documentation for dhtmlxGantt 2.0 by next link

docs.dhtmlx.com/gantt/

It is not in the final state yet, but covers most of API and use-cases.
The updated package of dhtmlxgantt itself, can be downloaded by the next link

docs.dhtmlx.com/gantt/dhtmlxgantt.zip