In that update (or in the Windows 10 Insider Builds you can get if you're a techie or adventurous) you're going to get a lot of nice polish AND the ability to optionally run Linux (ELF) Binaries on Windows 10 at the command line. The feature is the Linux Subsystem for Windows or "Bash on Windows" or sometimes "Ubuntu on Windows." Call it what you like, they're real, and they're spectacular.
Developers can run all their Linux user-mode developer tools like Redis or even TensorFlow (without GPU support).
I went and recorded a 20 min video screencast showing what you need to do to enable and some cool stuff that just scratches the surface of this new feature. Personally, I love that I can develop with Rails on Windows and it actually works and isn't a second class citizen. If you're a developer of any kind this opens up a whole world where you can develop for Windows and Linux without compromise and without the weight of a VM.