As the reference explained, no version of VS Express is supported with ICL to the extent of GUI integration nor for X64 target (because Microsoft doesn't permit it) , nor is it tested regularly. You're welcome to try if VS2012 Express works for 32-bit command line mode like the earlier ones, since Microsoft changed the plan to eliminate such features at the last hour.
>>Does Intel® Visual Fortran Composer XE for Windows support VS2012 express?..
It looks like No but integration with Visual Studio 2010 Shell ( some kind of Express Edition ) is supported. It works well and I have it installed on my primary development computer.
>>...I say this
>>
>>software.intel.com/en-us/articles/intel-visual-fortran-command-li...
I think the article is not up-to-date because Intel Parallel Studio XE 2013 does a really good job by integrating Intel compilers ( C++ & Fortran ) with different editions of Visual Studio.