Microsoft announced that they are backporting the Windows Subsystem for Linux 2 (WSL2) distros to Windows 10 version 1903, and Windows 10 version 1909. Redmond based software giant said that it took over the last few months to bring it to Windows 10 version 1903 and 1909.
The backported WSL2 support comes to x64 systems only via a cumulative update (KB4571748) for those listed two Windows 10 versions and is currently being rollout out to the users.