As we told you before that Microsoft is working hard on the upcoming Windows 8, we have got another revelation and that is the Out of Box Experience (OOBE). This is a new Metro UI based Installation way, old days gone the Aero UI way Installation. It’s quite familiar with the Windows Media Center found in Windows Vista and 7. The Metro UI Installation can only be activated in leaked Windows 8 M2/M3 via indiscreet hidden file in Windows directory.
Check Out The Screenshot of the New OOBE of Windows 8 Build M3: