[zstone]

CF, while older, is significantly faster than SD. This is inherent in the number of busses in the design - SD communicates over a few wires, CF over many more, effectively increasing its bandwidth. My guess is that we will see CF until we SATA to mini SSDs or similar; it will take a real revolution in digital storage to dethrone the current king that is CF, SD will never be as fast.

This much leadtime on a prominent release is common, and right now the only camera that the 1D-X is going to cannibalize is the 1DmarkIV, which was already becoming quite scarce _before_ this announcement. Canon Direct lists it as out of stock, same with B&H. Adorama and Amazon seem to have a few each, though. Still, what sales are being hurt here? And mind you, we're talking about a relatively massive investment, you could buy ~10 T3i's for this sticker price, not an investment made lightly or made often - Canon probably doesn't mind waiting a few more months, and if you are in the market for something like this you are paying attention to the rumor mill anyways.

Just think, wouldn't you be pissed if they HADN'T given this much lead time, and you went and tracked down a now-rare 1D-IV, only to see this come out a few months later? I know I'd be quite irate.

Just my 2c...