I am looking into it. I actually pre-ordered the 35mm f/2 IS, but that was more to get an early place in line when they are shipped. I may cancel. I am debating about how best to add to my kit to help with my type of "event" photography (family functions, etc). But I keep coming back to a fast 30-35 mm lens.

I am having some trouble wrapping my head around the benefit of IS at 35 mm on a crop sensor camera (I can see benefit on FF). It really isn't enough to let you consistently blur water for waterfalls (here is where FF would benefit). For anything with people or motion, it may not be needed as I typically wouldn't want to shoot less than 1/60th of a second anyway. So, really, the only benefit I am coming up with is low light photography of subjects that aren't moving. I say this being a big fan of IS. But 35 mm seems to be in between the functions where I use IS on a crop sensor camera (15-24 mm to hand hold waterfalls and >35 mm to be able to shoot ~1/60th for people).

That said, I am still impressed by the reviews I've read of the 24/28 f/2.8 IS lenses, and this lens seems to be very similar. And the MTF chart is pretty darn good. So I am tempted, but still evaluating the other options, including the new Sigma option.