I agree. As much as I enjoy my 1DxMKII, I would like to see one more iteration of this DSLR. A little more MP and upgrade to the new processors will really make the AF even better in low light.
man I have to disagree on the bigger MP sensor
5D4 is 30 and the files are notably slower to work with in LR....Much slower...and I have the newest I mac and its a loaded machine
The files size now on the 1Dx2 are perfect for post