So in sumary....Canon doesn't need to create a 1Dxs to answer the D4s...because it's still selling very very well and hasn't stopped selling since it was introduced. The D4s was introduced to address some issues why the D4 wasn't such a big success. Even though the D4 has a slightly better shadow noise control in under exposed areas, the 1Dx is a better camera overall and less glitchy / lockup / AF issues (being a comitted Canon user, that felt nice to write).
Then the next 12 pages...were mostly written by guys who think they under stood camera sensor design, those who do understand camera sensor design and those who really don't understand what on earth the last 12 pages were about....(i'm in the latter)
We all know a high MP sensor based camera is coming from Canon at some point...but at the moment it's not here and is vapour ware. It will satisfy a few noisy buyers, but for most pros and serious amatures, they will be far better served with the current 1DX or 5DIII cameras....go figure.
in the mean time, some of us have been out and photographed stuff....it's cold out there!