From around the watercooler
I have heard from a couple of places that the Canon EOS-1D X may be delayed, yet again. The latest we're hearing is that arrival of the camera body won't be until June, 2012.
We've also heard allocation to stores is based on preorders from CPS members. In other words, CPS members will get to the front of the line for 1D X preorders. This may not be true in all countries, but it is in a couple I have confirmed.
This isn't confirmed by Canon yet.