I got some unconfirmed rumors from a new source about another new Sigma lens that could be announced on Feb 26. It’s a successor of the 50-100mm f/1.8 APS-C lens made for the Nikon F and Sigma SA system. The source said the specs of the new lens are not exactly the same. It would become the perfect companion for the current Sigma 17-40mm f/1.8 DC Art lens.
So far I can only confirm that a new 35mm f/1.4II and 35mm f/1.4 (APS-C) lens will be announced next week.