No plans to support specifically, but a surprising amount of things work simply due to their effort making the rest of it work.

Yes, I know Microsoft doesn't have an X server. This is why I asked if people could recommend a 3rd party one.

A Microsoft Channel 9 video on how to use XMING with Windows Subsystem for Linux:

https://channel9.msdn.com/Blogs/WinCoder/XMING--Bash-on-Ubun...

I think what they mean by "no current plans to support X/GUI apps" is that WSL itself doesn't include support for an X server but you can still go ahead and connect X applications to any running X server.

Try this one: https://github.com/kpocza/LoWe

It still works. X is a protocol, install a server and point at it.

It's unsupported, which means it doesn't necessarily work well and they won't help you out.