Today at the D9 conference, Microsoft unveiled the latest version of its Windows operating system. Code-named Windows 8, in a surprise move Microsoft is incorporating touchscreen technology into the Windows UI. Windows 8 will be used across a wide range of computing devices – PCs, laptops, tablets and more. One OS for all of those devices. This runs counter to Apple’s philosophy, which has separate OS’s for its desktop / laptops (Mac OS X) and tablets / mobile phones (iOS).