I've seen too the numbers complaining about the price hike, but to be honest, I don't really see how people couldn't expect this to happen.
Canon are being made out to be the villain by a lot of people, but there has to be a sense of reality check in regards to the market the way it is.
First of all, Canon, may have listed a RRP, but there's no reason Canon CAN'T increase the price, and chances are there'll be a note of such conditions on their website, in their release documentation etc. I can't think of one company in the world that doesn't at least cover this concept in anything they releas a price for.
Secondly I believe that retailers have also played a part in the 'suggestion' of cancelling orders and relisting them (Bait and switch). Not likely... Canon would have received orders from their customers (the retailers), and have absolutely no connection with the customer of the retailers. Canons only honor is to their direct customer. They may SUGGEST all they want, but it's not an expressed opinion of the company... Unprofessional for sure, but not official... And in this case, I really doubt Canon would have suggested so. Any order received by the retailer from their customer is purely at their own risk, and it lies solely with them.
Check also, half the retail places (maybe not some of the small ones though, as it's often fly under radar territory, or never been an issue in the past) will have a condition of preorder with something along the lines of the price may change, and doesn't guarentee you the said item in the next shipment, only when available for your shipment.
Don't get me wrong, it's crappy, and you feel ripped... but realistically, with the market as slack as it is right now, I'd be counting blessings that it isn't worse.