Windows 10 build 19617.1000

Windows 10 build 19617.1000 is an unleaked build of Manganese, the 20H2 development semester of Windows as a service. A screenshot showing Command Prompt running in this build were shown in the article "The Windows Subsystem for Linux BUILD 2020 Summary" on Windows Command Line Developer Blogs on 19 May 2020 to demonstrate the  command.