Does anyone remember any time in the past there was a discount on a lens even before it started shipping?
CanonUSA did mess up when the 16-35 f/4 IS was announced. It was offered directly with a 10% discount for a short period of time. I thought Canon would cancel my preorder because it was a mistake, but they honored it.
2200 seems a bit high for a lens that is not a primary lens for a lot of people. And given the effective price reduction of the 24-70 f/2.8 II, 24-70 f/4 IS ($1500 at launch, really?) and 16-35 f/4 IS, people have caught on that there is a large premium for the early adopter. And how does it compare versus the Tamron 150-600 and the new Sigmas? I'm waiting for the reviews, but even the Canon comes out favorably, I'll probably wait for a year for the price to settle a bit.