Answered in the Q&A video that followed the one you linked to. The project will be avoiding OS specific code as much as possible so I can't see a there being a dependency on visual studio. http://youtu.be/I5fNrmQYeuI?t=11m21s
While VS 2013 has much better C++11 support it's not close to full compliance. The Visual C++ team have decided to work on C++11/C++14 together which is slowing C++11 a bit.
Here's a blog post laying out their plans.
http://blogs.msdn.com/b/somasegar/archive/2013/06/28/cpp-con...