According to Mike Harsh, a beta version is coming in an insider release "after the Build conference." [1] During an interview Q&A, Kevin Gallo says that it might show up in a week or two. [2]
Re:Ubuntu on Windows
by jameslk on Wednesday March 30, 2016 @10:26PM
(#11394587)
This comment should be at the top. It's nice that everyone has an opinion about this announcement, but I just wanted to try it out. Unfortunately it's not as obvious that it hasn't been released yet.
[1] https://blogs.windows.com/buildingapps/2016/03/30/run-bash-o...
[2] https://channel9.msdn.com/Events/Build/2016/C904