| Full buildtag | 10.0.17666.1000 (rs_prerelease.180504-1501) | 
                                
                    | BIOS date | 05/05/2018 | 
                                
                    | Product Key | n/a | 
            
         
                    
Notes
            Release Information
This build released as a Docker Image at https://hub.docker.com on 11 May 2018.
And then this build was released to users of the Insider Program on 15/05/2018 with full Desktop Experience:
Official announcement: https://blogs.windows.com/windowsexperience/2018/05/15/announcing-windows-server-2019-insider-preview-build-17666/
        
        
        
                    
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