The version in the link you send is even older than the public one.

It is a tremendous disservice to discontinue support for an image format that you are actively using and is used by developers.  I would urge you to reconsider abandoning the DNG SDK.

I am referring to the SDK, not the converter.  The current DNG posted is old, I am told, and there is a new version. I want to export DNG from my app.I am referring to this, last update five years ago.https://helpx.adobe.com/security/products/dng-sdk.html

How do I obtain the latest DNG SDK?  The publicly available v1.7.1 is several years old.I have been informed there is a more recent version/