I just bought the current 35 f/2. I was going to wait for an update, but after seeing the pricing on the 24 f/2.8 IS and the 28 f/2.8 IS, I decided I wouldn't want to pay that much for a new 35 f/2 anyway, so why wait. It will probably have killer optics, etc. but at those prices these are aimed at an entirely different market segment.
What are the chances canon keep all the current primes around and carry both? Or do you think the old ones go away - no more affordable primes?