I have Visual Studio 2012. I see, however, the Microsoft is promoting Visual Studio Express 2012 for writing Windows 8 Metro applications:
"You have an idea for an app that could change lives around the world. Visual Studio Express for Windows 8 delivers everything you need to bring it to millions of customers. And those changed lives we were talking about? One of them could be yours."
http://www.microsoft.com/visualstudio/eng/products/visual-studio-express-for-windows-8
I know the express versions of Visual Studio are free. I'd prefer, however, to use my bought and paid for VS 2012 rather than installing the express version.
Is there anything in "Visual Studio Express 2012 for Windows 8" that is not in "Visual Studio 2012" for developing Windows 8 Metro Applications? I realize that this is a simple question, but I can't find the answer on Microsoft web pages.
You can create Modern UI applications, formerly known as Metro UI applications in Visual Studio 2012. Thus, every application that you create with Express should be availiable in full version (Professional, Ultimate, etc.) versions of Visual Studio.
Here is a comparison diagram: