Unlike Windows 7, there’s no version of Windows 8 that comes with Windows Media Centre (WMC). This is the software that allows a PC to become a high-powered digital video recorder (DVR) with the addition of a hardware tuner or two. But it can be added for free to Windows 8 Pro only, until January 31, 2013, when the initial Windows 8 upgrade offer expires.
At the same time and on the same offer page, Microsoft is offering the Windows 8 Pro Pack for the reduced price of $69.99, adding back the features taken out of plain vanilla Windows 8. This offer is also valid until January 31, 2013.