Windows 8 Pro Upgrade 32/64 Bit (Product Key Card) - w / Free Updates to 8.1 Pro - And Free Updates to Windows 10 (when released) Running Windows 7, Windows XP or Windows Vista? Upgrade to Windows 8 with Windows 8 Pro Once you install Windows 8, Windows 8.1 is available as a free update directly from Microsoft Customize your Start screen with Live Tiles Choose between 32 bit Upgrade or 64 Bit Upgrade Encrypt your data with Bitlocker