The DGDK.NET is not an abondoned project. The current version 1.0.9.0 is in line with the latest version of the C++ Lib version of the DGDK. As TGC updates/enhances the base dgdk, the .net version is updated to match it. This is not to say that the base dgdk is necessarily always inline with DBP. They are separate products so DBP may get updated, but a lag may occur until those changes/updates are propogated to the dgdk. Thats up to TGC. Once the dgdk is updated Apex can update the .net version.
hope that helps explain the flow
My DBP plugins page is now hosted [href]
here[/href]