Removed the "Preview" label - WSL in the Store is now generally available!
Use an override in generator.early to prevent the /tmp/.X11-unix socket from being removed during boot
Don't create a pty for systemd to fix issue where systemd would time out during boot
It's pretty new, released late September. They still have their own init system. If you are using a systemd enabled distro then their init will become a child process of systemd, allowing systemd to have PID 1.
The creator of systemd works at Microsoft now[0]. Not sure if that factored into the change. systemd seems pretty heavy for VMs, but apparently they still start fast so there must be ways to optimize it.