This document provides an overview of Windows 8, including its roadmap, targeted platforms, versions, user interface called Metro, Windows Store applications, and key features and weaknesses compared to Windows 7. Windows 8 includes a new start screen instead of the start menu and task manager, and introduces a lock screen and different copy functionality. It targets desktop PCs, tablets, phones, and gaming consoles through a shared core that allows development of immersive, full-screen, touch-optimized apps distributed through the Windows Store.