According to a recently interview with Sigma’s CEO Kazuto Yamaki by Sigma Canada, Kazuto Yamaki talked about all lenses they made and upcoming lenses they are going to release. You can watch the video above.
Sigma 24-70mm f/2 DG OS HSM
Sigma 85mm f/1.4 Art and 135mm Art Lenses to be Announced Next

Sigma has recently announced the new Sigma 24mm f/1.4 DG HSM Art lens, according to Canon Rumors, the next Sigma art lenses will be Sigma 85mm f/1.4 Art lens and Sigma 135mm f/2 Art lens.
Sigma is Working on New 24-70mm & 70-200mm Lenses
Sigma 24mm f/1.4 Art and 14-24mm f/4 with OS to be Announced at Photokina 2014
According to latest rumors from PR, Sigma is planning to announce two lenses for Photokina 2014. One is Sigma 24mm f/1.4 Art lens, the other is Sigma 14-24mm f/4 OS lens.
First image of Sigma 24-70mm f/2 DG OS HSM lens ?
Rumors: Sigma 24-70mm f/2 DG OS HSM lens to be announced ?

Sigma is rumored to working on a lens called Sigma 24-70mm f/2 DG OS HSM for full frame cameras. This would be world’s first 24-70mm standard zoom lens offers f/2, faster than Canon & Nikon & Sony 24-70mm f/2.8.