They really want to; I think quite a lot of us are feeling a bit shafted by what was on the 7D and wasn't on the 5D2. The 5D3 will have to be quite an incredible FF body to keep them above water. Not to mention the silence on the 1Ds4 in the face of the Nikon D3x. I was just about to raise the anti with my gear as well, but now i'm on pause for the time being
Canon really want to get the next 5D body a bit more finely tuned, or I think there will be a rather Biblical exodus off to the other camp. The AF is simply appalling