Windows 10 insider preview build 14316: now with bash
 

Windows 10 Insider testers in the fast ring should be receiving preview build 14316 today. This update gives us an early look at the first round of updates in the Anniversary Update coming this summer, and it's a doozy. The big-ticket item in the new build is the first release of the Windows Subsystem for Linux beta, which will allow testers to download, install, and run the bash shell directly on Windows.

http://techreport.com/news/29951/win...-now-with-bash