It's sure to attract as much criticism as it does praise, because Metro is so very different from what went before, but Metro is certainly new to Windows 8. It's also designed to work best with touch-enabled devices, so if you are running a Windows 7 PC without a touchscreen, you may decide that the change is not worth it. There's a lot of dispute about the potential value of touchscreen PCs and laptops, and it is indisputably true that touch is not ideal for typing on an upright screen, for instance. But if you do have a touch-enabled device, you may find that you interact with a Windows 8 PC using your digits a lot more than you expected to.