As reported a little more than a month ago, Sigma currently works on over ten lenses and on the Quattro successors for the SD1 Merrill and DP Merrills. Of all these lenses, the 24mm f/1.4 Art and the 85mm f/1.4 Art are said to be furthest along in the development process, according to rumors. An announcement is definitely expected shortly before or at the Photokina.
This list from Sigma-Rumors with probability statements for all upcoming lenses and cameras triggered my blog article at that time. The SR admin mentioned on this occasion that Sigma is working on a successor of the 12-24mm f/3.5-5.6 ultra wide angle lens for full frame. Photo-Rumors now reports that the UWA lens will be announced at the Photokina and will be priced at $1.199, but different from the SR admin’s assumption, it will have a 14-24mm focal length and a constant aperture of f/4. The lens thus competes with the faster and considerably more expensive Nikkor 14-24mm f/2.8. Within Canon and Sony systems, it would be unrivaled.
Furthermore, the 24mm f/1.4 Art will be priced at $1.099 according to Photo-Rumors. It is hard to evaluate the truth of this price info. On the one hand, Sigma released the 35mm f/1.4 Art and the 50mm f/1.4 Art with the same RRPs, on the other hand, 24mm f/1.4 Canon and Nikon lenses are 30% and 70% more expensive respectively.