As a 5DII and 5DIII lover with lots of EF glass, I've said it many times here and I'll say it again- Canon needs to provide more value to its video customers and not just lead them on by trickling down the latest video features- such as 4K- to prosumers years after they've reached competitors' products. Yes, Canon maintains steady profits by doing so, but there are other ways to make profit, namely, by cannibalizing yourself and your own products to find what consumers want and selling on volume. Follow the lead of companies like Apple (under Jobs), who were fearless in coming out with new and better products that cannibalized existing lines because those products were the future. Canon needs fearless leadership to do this, and it won't happen overnight, but when you're ahead, as Canon still is, you have to be a bit risky and we've just not seen that so far from their video integration with the 5D line, since the 5DII.
If the dynamic range is right, this camera will be everything I want in a stills camera, but sorely lacking if the 4K video is hobbled in some way. Canon also could have implemented 120fps in 1080p mode for us video shooters, but hobbled it to up-sell to the Cinema EOS line and higher end models. This has got to stop if they want to maintain brand loyalty and goodwill among their customers. Come on, Canon- you can do so much better. Don't think about marketing and protecting existing models, think about making the all around BEST products.
And just so everyone knows, this is constructive criticism, because I want them to provide the best possible Canon products to me for my use as a hybrid stills / video shooter. Right now, I'm really on the fence between this and a Sony, and I'd really rather go with Canon. So here's to hoping the 5DIV announcement will surprise me and prove this wrong.
Rant = over.