Its only for APS-C but hopefully others can follow the lead?
http://www.canonrumors.com/2013/04/sigma-announces-18-35-f1-8-dc-hsm-art-for-aps-c/
http://www.canonrumors.com/2013/04/sigma-announces-18-35-f1-8-dc-hsm-art-for-aps-c/