GRG1515: I recently bought this printer and then bought a Mac... this printer doesn't work with OSX 10.7! This printer has been on the market since a year when I bought it and it is now out of date. Last time I'm buying a Canon printer. Can't wait until they provide no support for Windows 8 either. Canon You Can -> Canon You can't anymore!
It will work on Windows 8 probably on Day 1, since all NT6 family operating systems use the same print drivers, and it works on both Vista and 7 (the other members of the NT6 family). It works the same way with Windows 2K, XP and 2K3, all of which are NT5 family systems - printer drivers don't need to be re-written very often for PCs.