Nash writes "Ars Technica takes a look under the hood of Vista, discussing the need for a new API and comparing the graphics engine in Vista to that of Mac OS X. 'With Windows Vista it will be possible to implement Exposé properly-with live window updates and low system overhead. That said, it doesn't thus far look like Microsoft will be doing anything so useful as Exposé. Though the blurred glass effect is rather attractive, it's not exactly useful. Other visual effects include miniature window previews when the mouse cursor is hovered over taskbar buttons and an upgraded alt-tab device, and Flip3D.'"