The Building Windows 8 blog comes up with a detailed post explaining the improved support of Windows 8 regarding different screen sizes, resolutions and pixel densities. Early on, the Windows team explored an inch-based scaling system, but found out that bitmaps would look blurry when scaled to unpredictable sizes. They ended up choosing three predefined scale percentages: 100%/140%/180%. The article goes on pondering the best solutions to make each app look good on different screens. Also shown: the distribution of resolutions being used today with Windows 7, 1366x768 having a huge lead at 42%."