I know many folks are disappointed at the 24-70 II which does not have IS... but got me thinking.
This is a beast of a lens... and looking at the MTF graphs... looks to be a huge performer.
Does the lens come before the cart so to speak...
Would make sense to me, especially if Canon has a beast of a MP body on the forefront that there will need to be better glass to really take advantage of a more dense sensor.
So maybe the 24-70, and especially the larger filter size in the front has a lot more to do with a more complete higher performing package down the line.
And while some of the other lens releases have many shaking their heads, maybe Canon saw something with the old versions on their development bodies that required improvement.
When I start seeing the revamping of lenses going on, especially when some of them seem "lateral" in nature (i.e. no major improvement in speed of glass), it makes me think that Canon is paying attention to IQ and that they saw holes in their lens performance with the larger resolution that they wanted to correct up front.
It also may explain why many have commented that the High ISO images on the D800 seem noisy or unimpressive.
Larger resolution without a doubt will show some flaws in lenses that might have otherwise been less apparent, just the same as why some lenses that have flaws on a FF often perform better on a crop (like soft outsides, vignetting, etc.)
Something tells me Canon is fine with what is going on and a flanking maneuver may be under foot