OMG!
I'm so excited! Congratulations to Canon! Finally a full frame, high frame rate professional body that can compete with Nikon.
12 fps seems like a nice jump in frame rate from 5 fps on Canon's other FF pro body (1Ds MK III).
Hopefully it will live up to it's billing with it's larger pixel size, lower noise, and better low light AF. I can't wait for Bryan's Review.
I'm also hopeful that this camera can produce a clean shot at 12,800 ISO @ f/2.8 and 1/1000sec which would be perfect for indoor sports and outdoor night games. I'm really only looking for a 1 stop improvement over the 1D-MK IV, but a 2 stop improvement would be the bomb.
http://www.dpreview.com/news/1110/11101810canoneos1dx.asp
http://www.dpreview.com/articles/5149972341/canon-eos-1d-x-overview
Let the games begin,
Rich