After 3 and 1/2 years of work, 7 beta releases, 5 weeks after schedule, at Aug 7, 2020 DMX 5.0 has finally arrived.
The focus of this final milestone was on improving the DMX development experience. The APIs are consolidated, and a DMX Developer Guide is available, as well as API docs. There are minor Webclient UI improvements and crucial bug fixes as well. For more information and download link see this forum posting.
Note: since version 5 DeepaMehta is called "DMX".