According to Nokishita Camera, Sigma is going to announce a new 14-24mm f/2.8 DG HSM Art lens in next few days for the upcoming CP+ Show in Japan. It will be available for Canon EF-mount and Nikon F-mount DSLR cameras.
Sigma is rumored to announce a lot of new lenses for the upcoming CP+ Show. Stay tuned for more info.
Sigma has already released the new 12-24mm f/4 DG HSM Art lens in September, 2016.