The Windows 8 Beta blog reports that Chinese site Win7China had an exclusive talk with their tipster in Microsoft and according to them Windows 8 would have restore to Factory settings option

Another thing they talked about it is that the installation of Windows 8 Milestone 3 took 8 minutes compared to the 23-25 minutes taken by Windows 7 on same configuration. This means that Windows 8 would install around 2.5 times faster then Windows 7. In addition to the installation time, the time taken to update Windows and the time taken to wake up from sleep has been improved significantly.

  Windows 8 to have restore to factory setting option and other features