Windows 8 will have two personalities: One will be similar to the desktop version of Windows 7. The other will be a tablet skin that looks a lot like the Windows Phone interface. In one word, it's the sheer dominance of the iPad.
According to Microsoft, Windows 8 will give computer users the option of navigation through the kind of touch-based interface they've got used to on tablets and smartphones. Continuing with the tablet-mimicking paradigm, Windows 8 also lets users run apps in full-screen mode. As a result of all the changes, Microsoft says Windows 8 will be equally at home either on traditional PCs and laptops or on tablets.