This link just got me confused. There is nothing worthwhile in it regarding 1D X. We all know that it will be a 18 MP sensor, not 22 MP or anything like that, but that is beside the point. MPs are not everything. For my purposes I expect the 1D X will be twice as good as my 5D Mark III just because it will perform autofocus faster and it will shoot faster, which in some cases makes the difference between nailing the shot I want or providing reactions such as:
1. I should have a picture with the wing of the bird not exactly in front of its head.
2. Why is that bee halfway out of my frame? It just sat there, then I adjusted my focus a bit and now its too late.
3. Add similar entries at your leasure.
The upcoming 1D X promises to give even better low light capabilities than the 5D Mark III and it is simply fast and highly responsive. If this counts for something to you, you shouldn't shy away, before you have even seen the first reliable reviews. The digital picture is certainly a website I recommend for good reviews, but they don't have a 1D X review out yet...