This means that WSL can now be used as a mainline toolset and WSL will be a daily developer toolset. It also means that developers can be better at building, testing, deploying, and managing your Linux apps and systems on Windows 10.
All this will allow two terminal environments. First a Windows Subsystem for Linux (WSL, also known as Bash on Windows) which will allow a universe of easily installed languages, frameworks, software and tools to your familiar Windows environment. Along with that, you get decades of expertise, configuration tips, and code examples from the Unix/Linux and Mac OS world. PowerShell will also be cross-platform.
Developers can file WSL issues via Vole's normal support mechanisms and follow a more formal issue resolution process. They ca also provide feedback via Windows 10 Feedback Hub app, which delivers feedback directly to the team. Linux files are not currently accessible from Windows yet but Microsoft says they're working on a fix.
Microsoft revealed its plans to add support for the Linux Bash Shell in Windows 10 during Build 2016 in late March. This was a huge breakthrough particularly when Vole open sourced Windows PowerShell. These milestones mean the most important tools available to developers and sysadmins are for the first time non-proprietary, community-supported and available on all significant computing platforms: Windows and Linux and insignificant ones like MacOS.