My personal view is the 1DX will drop to the Â£4200-Â£4500 price range after the initial launch.
They may even offer it at launch to make the price closer to the mark for 5D2 users who want more of the low light, improved AF, rugged body and dual cf slots.
Nikon D4 will be the competitor to the 1DX, not the D800 - if Nikon were to put out such technology at the discussed low prices, it wuld be ahuge change of policy, becuase they never dropped the price of the D700 to compete with the 5D2, even though it was clear they were being taken to the cleaners using sales comparisons between just those 2 models.
I'm not a scientist, but i genuinely believe that the timing of the release of the 1Dx is to hit the market really hard for next years Olympics and the wedding season. Stack um up and sell 'em cheap as the saying goes.
Of course, even Â£4200 is not cheap by a lot of peoples budget, but then Canon have the potential to hit the market with the 5D3 and 7D2 to clean up for those on lower budgets.
The 1 series is never the big money market - but announcing the 1DX sure has hell set the bar high for others to follow with their next releases.
A single Digic 5+ for a 5D3 and dual Digic 5 for the 7D2 wouldn't be a bad option in the current bodies, with upgrades to dual CF slots, next level of AF improvement and ISO afforded by the extra processing power.
Yep, i think Canon have been rather bold with their strategy and have certainly thrown down the gauntlet.
Oh, and if you're wondering - i would expect the above 5D3 to hit the markets for no more than Â£2500 and the 7D2 to com in at about Â£1500 (7D2 would still only be an 18mp body).
All those lovely Digic 5 processes being shipped out by the thousands...