When Windows 8 Upgrade Assistant is done, you’ll know if Windows 8 or Windows 8 Pro will run on your PC. You’ll also get a free compatibility report that lists which of your current apps, programs, and devices will still work, ones that might not work, and what you can do to get them working again after you upgrade.
You don’t have to do anything with this info—if we need any apps uninstalled or suspended, we'll let you know that later.
If some of your apps and devices aren’t listed in the compatibility report, it might be because we don't have compatibility info for that product yet. (You can check the Windows Compatibility Center or contact the product manufacturer if you need more info.)