Upgrade to Windows 8 Pro for $39.99
Windows Team Blog:
You will be able to upgrade from any consumer edition of Windows 7 to Windows 8 Pro and bring everything along which includes your Windows settings, personal files, and apps. If you are upgrading from Windows Vista, you will be able to bring along your Windows settings and personal files, and if you are upgrading from Windows XP you will only be able to bring along your personal files.
A retail version (DVD) will cost $69.99
