libc++ for Windows : any approximate time-frame?

Hello,

I can be considered a total (re)newbie to Windows based systems.

Given the same, and my failure to understand how to get libc++ compiled under Windows 7 64-bit using Clang/LLVM without relying on GNU tools, would there be any way to know if there's any progress happening (anywhere) on getting libc++ as an installable under Windows based systems (without depending on MingW or Cygwin).

Thanks,

~Mayuresh