Designing the Windows Start Screen | Microsoft

The MS blog at http://blogs.msdn.com/b/b8/archive/2011/10/03/evolving-the-start-menu.aspx recently posted how the idea of start screen came into picture, why they removed start menu. They also say that ending metro apps without task manager would be possible but not necessary as...

"With regard to the main user experience, particularly Start, we’re noticing some themes in your comments. Will there be a way to close Metro style apps without going to Task Manager? (Yes there will be, but we also want to talk about why you probably won't need to use it.) Are we going to do anything to make the mouse more efficient in scrolling through your programs in Start? (Yes, we'll improve that experience, and show you much more in the beta.) Some of you have talked about it feeling less efficient to cycle through your recent programs compared to using the taskbar (and we'll have more to say about that in future posts)."

The DP was just for designing apps. The real Windows 8 will be shown to us in beta as the post suggests.