Visual Studio 2012 and Windows 8 Released @ MSDN

Visual Studio 2012 and Windows 8 Released to Developers -- Visual Studio Magazine:

As planned, Microsoft has released final version of Windows 8 and Visual Studio 2012 @ MSDN.

This is still x86 and x64 only, no version "Windows RT" that runs ARM CPU.
That is only available for tablet manufacturers...

This time there are 3 versions of Windows 8, "standard/basic", "Pro" and "Enterprise".

Windows 8 Editions @ Wikipedia