Behind the scenes we were already working on adding support for this new version, so I am happy to announce that we have created a Preview release of SharePointDsc, which works with SharePoint Server Subscription Edition. Many SharePointDsc resources (but not all) have been tested and updated to work with the Public Preview.
This Preview release is not available via the PowerShell Gallery, but is attached to this blog post. Just download and extract the file to C:\Program Files\WindowsPowerShell\Modules and go wild!
If you encounter any issues, please go ahead and create an issue in the issue list. Make sure you mention the issue is for the SharePoint Server Subscription Edition.
Have fun playing with the future of SharePoint Server!