Neowin.net posted a news story that Windows 8 will come with History Vault, a Time Machine competitor

The image comes courtesy of CNbeta.com and clearly shows the new feature. The backup function will work like many others that are currently on the market, meaning that they will give you ability to restore files on an individual basis from a certain date and time. You can currently obtain this feature in Windows 7 but the use of third party software is required for complete automation.

  Windows 8 to feature History Vault, Time Machine competitor