Since the newer Visual C++ content is not yet live on MSDN, I copied the key bits from the "What's New for Visual C++ Developers" and replicated it below. Note that this post may be removed after the MSDN content has been available for a few weeks.
Thanks for your patience!
The default behavior when this option is not specified is the same as in Visual Studio 2012.
The Visual Studio IDE has significant improvements to help you be more productive when you code in C++.
To modify the brace-completion settings, on the menu bar in Visual Studio, choose Tools, Options, expand the Text Editor, C/C++, and General nodes, and then make your changes. You can also change the settings for all Visual Studio languages by expanding the Text Editor, All Languages, and General nodes.
To modify specific C++ settings, on the menu bar, choose Tools, Options, expand the Text Editor, C/C++, and Advanced nodes, and then make your changes.
Two more things were done in VS2013 preview in the area of IDE and Productivity for C++:
1) The project properties dialog is now resizable.
2) The function list box no longer default to "Global Scope" when there are more functions in a class scope than in global scope. (So now if you want to go to MyClass::MyFunction, you don't have to change from GlobalScope to MyClass, and then select MyFunction from the list box above your source, to the right.
These were items that developers have long requested. Thanks Microsoft.