Latest email from them:
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Hello Pawel,
Hope you are doing well.
It was a pleasure to work with you on the case # 11695636 opened for the issue ‘set additional SharePoint locations via group policy’. I am extremely glad that the issue has been resolved to your satisfaction.
I am providing you with a summary of the key points of your Service Request for your records.
Issue Definition: set additional SharePoint locations via group policy
Resolution: As of now there is no way to set additional SharePoint locations via group policy so that it gets connect or attached with OneDrive. However we have received several feedbacks about the same and we are currently developing such a feature.
The feature called TeamSite auto-mount is in development phase is expected as of the latest update to be released by Q4 CY2018. Keep in mind this is an expected release date.
To know more about the feature and its current status, kindly refer to the following article https://www.microsoft.com/en-us/microsoft-365/roadmap?featureid=27031
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