The 35/2 is tempting. The 24-70/4 not so much - I have the 24-70/2.8 and the 24-105/4, and I really like the extra reach of the 105mm lens. For me, 70mm on a full frame camera is not a particularly compelling focal length. Judging from the photos, I suspect Canon was focused on making the new zoom as small as possible so as to be a compact kit lens on the 6D.