An update to Visual Studio 2012 is now available for download. For full details, see Somasegar's blog.
This update includes a fix to a regression that was introduced in Update 2 when using ATL on Windows XP.
See KB 2835600
VS 2012 Update 3 includes a new verison of the compiler (17.00.60610) and the C/C++ Runtime (11.0.60610).
MSDN Downloads has the updated retail redistribution packages.
Related: Visual Studio 2012 Update 1, Visual Studio 2012 Update 2, Visual Studio 2012 Update 4