OK so, say I've got a 720p video in iTunes, I know you can have two versions of it; an SD one and the HD one, but can you also have three versions of it? i.e. an SD one an HD 720p one and HD 1080p one? Seeing as the new AppleTv supports streaming 1080p vids I thought I may get one for my 1080p tv but I've still got an old gen appletv that works fine, apart from the sync speeds, and that obviously only supports upto 720p vids. I figured it'd be easier to maintain one library for both appletvs, but of course it depends on if this ability is implemented in Itunes (I'm guessing it isn't).