The Nature of Metro
A few posts back I theorised Metro was either just a new skin for IE and a tieling mode for Windows window manager. Well heres the proof.
http://www.techrepublic.com/blog/window-on-windows/tweak-windows-8-to-remove-the-metro-interface/5077?tag=nl.e101
The registry hack to switch off Metro and restore the Windows 7 task bar with start menu has already been found. Microsoft should just be distributing this as a service pack or add-on of some kind. Not a whole new OS.
download file now