Wow, this is interesting, no IS?? This is the number one feature request for this lens I would have thought, I don't see much point releasing an updated version with no IS.
Unless of course.. the 5D MkIII will have a built in stabilized sensor? Wow, new rumor hehe
If that's the case, it still begs the question: Why the update? One would have IS with the current version of the lens.
And I can't see Canon going in-camera with the IS. I wish they would, but it would hurt their lens market.
They won't go in body IS and I'm glad. I like seeing the IS effect through the view finder. Much better for composition.
I don't think that 24-70mm is a range the demands IS. Is it better to have it? Of course. Is it weird that they aren't including it? Kinda. But does this bother me? Nah, not really. Give me a super sharp 24-70mm II with a bit better looking bokeh and I'm good.
And before anyone says it, I know IS is better for video. Or, required more like it. But is the 24-70 really a lens you'd want to use for video? Aren't light weight primes the more desired lens?