I see no reason to either be excited or care about Canon lens releases anymore. With Nikon taking the lead in inflated pricing with the 80-400mm by charging a mind-blowing $2700, Canon is certain to do the same.
Since upgrading to FF, I've bought and returned a 24-70 F4 IS and a 35mm IS. I bet you can guess what I went with instead I have also scrapped plans to buy the 70-200mm F2.8 IS L v2, targeting the Tamron F2.8 VC instead.
The days where Canon and Nikon could command massive margins over 3rd party due to higher quality are gone. H*ll, they can't even get rebates right. That last round increased pricing on half the items.
As we can see, other 3rd party manufacturers can produce good lenses too. The new Sigmas or Tamrons show that. Some of you, who are technical fetishists, will say that the Canon lenses are about 5% better... But will this matter? If Canon will raise their pricing, I have other options.
That is like the mobile phone bubble. Do you realley need the iPhone 5? Or will an 3 or 4S be enough for you too?
I like the technical progress too. But there will be an limit if there is an big gap in price and performance.