WSL 2 is now available on Windows 10, version 2004, Build 19041+ without requiring an Insiders Preview. For install steps: https://docs.microsoft.com/windows/wsl/install-win10
However, if you want to try preview features on WSL, you can still follow these steps to install Windows Insider. For preview feature examples and the WSL roadmap: https://devblogs.microsoft.com/commandline/the-windows-subsystem-for-linux-build-2020-summary/
WSL 2 is the second version of the Windows Subsystem for Linux, which allows you to run a full UNIX system on your Windows machine and has significant performance improvements over WSL 1.
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