Visual Studio 2012 templates were calling it Windows Store app but MSDN still had it Metro.
"Term Metro Style app has been renamed to Windows Store app."
Finally, looks like MSDN team got around and fix it. Check this series of articles. The breadcrumb still says Metro style apps but the article contents and title has updated to "Window Store apps".
We had already changed our category name from Metro Style app to Windows Store app
on C# Corner but some articles from Microsoft experts were calling it Windows 8 apps.