Disclaimer: As of October 30, 2015, the Windows 8 and 8.1 Pro Pack (which upgraded Windows 8 Home or 8.1 Home to Windows 8 Pro or 8.1 Pro, with Media Center) and Media Pack (which added Media Center ...

Users running Windows XP, Windows Vista or Windows 7 will be able to download an upgrade to their OS to Windows 8 Pro for US$39.99 in 131 markets once the new Windows OS version becomes available, ...