My reasoning is that the new model will come in a 1D body with a pricetag similar to, but possibly a bit lower compared to the 1D-X. Why?
Without Nikon's D800 in the market I would expect Canon to use a price tag higher than the 1D-X, because then they would compete only with medium format cameras or the older D3X, which would enable Canon to confidently ask for a very high price tag, without customers likely to complain about it.
Now given that people are purchasing D800s Canon is likely to use a lower market entry price to divert a significant amount of consumers, who might otherwise purchase D800s.
I do hope that this is not only wishful thinking on my side.