Plans for HTML5?

Hi everyone!
We are developing a project with UE4 to package in HTML5. we are working with source code and Emscripten with success :), when we do the package to HTML5, it can run in Firefox only. So, I have got some questions:

  1. When could we see a release with HTML5 operative?
  2. When can we see our HTML5 projects run in all browsers?
  3. Now, have you got some Unreal dev-version with more options for this platform? It’s possible to work with this? Do we need some custom license to have access?

Thanks!!