Canon does provide some Windows 8 drivers for their printers, scanners, and multi-function devices, all of which you can download from their support site that I've linked to here.
Tip: While Canon does not seem to keep a list of their devices that work with Windows 8 out-of-the-box, I do own a number of Canon products and, looking at information on Microsoft's site and in Windows 8 itself, it appears as though most of their popular printer and scanner models will work perfectly fine in Windows 8 with the drivers Windows provides.
