OK. There've been many threads following thwe 1Dx announcement.
I want to add to this from my own experience (limited).
Years ago, i had a 1DsMKII. The pics were absolutely stunning, particularly the ability to rop, and a somewhat hard to describe quality. Sorry, I'm not technically inclined.
Dust problems forced me to forego the 1DsMKII, and I bought a Rebel, 350D. I loved that camera, with which i took many satisfying pictures.
Then, I bought a 7D and new lenses. I loved the build of that camera, and the visor. In the end, I came to hate that camera. For some unknown reason, I could not crop easily, the pics were too soft, I had to shrpen agressively, in other words, it was light-years away from the quality of my forst 1DsMKII.
I sold the 7D and all EF lenses.
Then, about 6 months ago, I bought a 5DMKII along with several L primes and a Zeiss 21 mm. I had sold all my zooms. Simply said, I love that camera. It's light, has excellent image quality, great cropability and it's simple to use. There's a learning curve with any new camera and any new lens. So, I have years (I hope) ahead of me to extract the quitessential potential of that camera and my new lenses.
Still, though, the image quality of the 5DMKII is not what the 1DsMKII was. There was something special about that camera, hard to define.
In conclusion, what I'm basically saying, is that megapixels mean nothing. The best camera I ever had was 16 MP. The Rebel with its 8 (or was it 10) MP was a lot of fun. The 7D with its abundance of megapixels was a dud. While the 5DII, also with an abundance of mwgapixels is fine, bit still not better than my 1DsMKII.
I think that Canon is going in the right direction with the 1Dx. Intelligence prevails over stupid marketing.
Thank you for reading.