Personally, I can't wait until FF trickles down to the Rebel. Isn't that the inevitable way things are going?
Certainly not - ff sensors will *always* be more expensive, but Rebels will *always* be the most cost effective cameras. Plus all the ef-s lenses only work with aps-c sensors because ff have a larger mirror, so unless Canon goes mirrorless ff won't "trickle down" but aps-c sensors will become better nearly obsoleting ff unless for high mp sensors.
Plus ff has some decisive disadvantages for the average shooter:
* smaller depth of field (hard to handle, or the larger dof/iso compensates part of the noise advantage),
* shorter reach (or *much* more expensive tele lenses) & more expensive wide angle lenses (easier to construct if nearer to the sensor on aps.c). Even standard ef lenses need to illuminate a larger sensor = more expensive...