Better story than the blogspam linked:

http://www.zdnet.com/is-metro-now-a-banned-word-at-microsoft...

This is actually a good move, since the Metro design philosophy was getting confused with the WinRT environment. You can make a WinRT app that's not Metro looking, and you can also make a Desktop app that's Metro (see MetroTwit http://www.metrotwit.com/wp-content/themes/MetroTwit2012/ima... ).

So the two different app types in Windows 8 will be WinRT apps and Desktop apps. Not a big fan of the 'Windows 8 style UI' terminology though, maybe they should come up with a different name to represent the design philosophy.