Disappointed but not terribly surprised. CES is exactly what it says, a Consumer Electronics Show. It's clear from their website they are dominated by electronics. Cameras are just a small part of the show and lenses even smaller.
This is nothing like Photokina, where the emphasis is on photography and manufacturers are going head-to-head.
Not a lot of incentive for camera manufacturers to announce a major product and have to compete for attention with every television, car gizmo, appliance and audio system under the sun.