Visual Studio 2012 RC is made available along with .NET framework 4.5 RC and are available for download now. Microsoft released both products in parallel to Windows 8 Release Preview and Windows Server 2012 RC. Visual Studio 2012 is fully Metro now and so after the Visual Studio 11 beta release this is major release.
Changes so far made after the beta release can be seen from its UI easily and Microsoft also changed the naming of so called Visual Studio 11 to Visual Studio 2012. Even logo of Visual Studio 2012 is changed and made as per Metro design principles. Have a look of the logo: