Otherwise, it would be hard to contemplate how they could miss such a big issue that would result in a recal.
If some how they were "forced" to release faster then they wanted due to market pressure (like the D800 hitting the shelves) then maybe they cut some of the testing short. Just seem odd they the mkIII hits the market before the 1DX.
I think competitive dynamic has influence some of these dates here...
1DX, 24mm f1.4L II, 50mm f1.2L, 85mm f1.2L II, 135mm f2L, 24-70mm f2.8L II, 70-200mm f2.8L IS II : D800, D4, 24 1.4G, 35 1.4G, 50 1.4G, 85 1.4G, 24-70 2.8, 70-200 2.8 VR II