I don't get this. Is this post saying that they are continuing to split the 1D product line? I thought the 1DX was created to be the camera that could do it all, so wouldn't it make sense to just upgrade the 1DX?
In my opinion, the 1Dx was a response to Nikon's professional line of bodies. Up until then Nikon's professional, high-fps cameras were full frame, whereas Canon's offerings were APS-H. Canon's storyline was that they were unifying the 1-series bodies but high-res is desirable for different applications. So the 1Dx is not a true replacement for the 1Ds-III. A true 1Ds-III replacement would have been a Full-frame 6fps, 28-32Mpx body. The 5D-III meets these specs (except for the much talked about Mpx count) and it's obviously also not in a 1-series chassis.
Anyway, my 1Ds-III keeps chugging along and will continue working until its true successor is released... Hopefully that'll be some day soon.
Eos: 1Ds-III, 5D-III, 6D, 60D | Canon EF: TSE-24L-II, 16-35L-II, 24L-II, 35L, 40STM, 100f/2.8, 135L | Wishlist: TSE-17L, 200f/2L
Tamron: 24-70VC, 70-200VC, 150-600VC | Samyang: 8mm-T3.8, 14mm-T3.1
Crazy Ideas: TSE-90L-II, 40f/1, 100f/1.4, 35-85f/2, 100-300f/4_1.4xInt, 500f/5.6_1.4xInt