As reported by the folks over at It's Foss, Arch Linux has confirmed that after discussions with Microsoft, an official ...
Starting from WSL version 2.4.8, we can install Ubuntu on WSL from a tar file, without using the Microsoft Store on Windows.
Arch Linux isn't the only big name joining the WSL party, either. It comes after Fedora confirmed plans to offer official WSL images , too, currently targeted for the next version release, 42.