http://blogs.msdn.com/b/vcblog/archive/2012/11/26/visual-studio-2012-update-1-now-available.aspx

Today, Soma  the availability of the Visual Studio 2012 Update 1! You can install it either from the  (see "Visual Studio 2012 Update 1" under the "Additional software" section).

As , you can now use the Visual C++ compiler and libraries to target Windows XP and Windows Server 2003. To target Windows XP:

1. In Solution Explorer, open the shortcut menu for your project, and then choose Properties.
2. In the Property Pages dialog box for the project, under Configuration Properties, General, set the Platform Toolset property to Visual Studio 2012 – Windows XP (v110_xp).

http://msdn.microsoft.com/en-us/library/hh409293.aspx

http://msdn.microsoft.com/en-us/library/jj851139.aspx