Hi Robert,
Please find the below details.
Query 1: Where do you stand today (September 2018) with JS 1 vs JS 2? Is JS 2 still in a Beta version?
Answer:
We would like to let you know that, our Essential JS 2 components are available for Production from the month of February 2018 (Essential Studio Volume 1, 2018 release). Please find the list of available Essential JS 2 components in the below link.
Query 2: I have found the Demo controls (particularly of the diagramming tool) very interesting. Could you explain what the "Preview" key refers too (see inserted screenshot)?
Answer:
The Preview label next to “Diagram” components refers that, Diagram component is at initial state and it is not recommended for Production application. But the components which don’t have Preview label represents that, it is suitable for your Production application. Currently Diagram component is planned to mark as final in our Essential Studio Volume 4, 2018 release.
Please let us know if you have queries.
Regards,
John R