From Sigma UK:
2015-02-10 09:00:00
New Sigma 24mm F1.4 DG HSM | Art lens
The Sigma Corporation is pleased to announce the Sigma 24mm F1.4 DG HSM | Art lens. SIGMA has a proven reputation for wide-angle lens design and manufacturing. Drawing on this experience and design know-how, refined through development of the SIGMA 35mm F1.4 DG HSM | Art and SIGMA 50mm F1.4 DG HSM | Art, we have successfully minimized sagittal coma flare, chromatic aberration, distortion and vignetting to achieve exceptional levels of optical performance with almost no aberration or distortion. The Sigma 24mm F1.4 DG HSM | Art lens is the latest “F1.4” to join the Sigma Art line series which is built with the highest optical performance in its class and perfect for a variety of subjects from cityscapes to a star-filled night sky. It is a new horizon for a large F1.4 maximum aperture wide-angle lens with rendering performance that is at a whole new level.
Price TBD
Available in SIGMA, Canon and Nikon AF mounts. Sony mount to be announced.
Estimated availability for Sigma and Canon mounts in March 2015, Nikon mount in April 2015.
I'm sure that "Price TBD" is at least part of the reason B&H and other retailers are not currently accepting preorders. Watch the site's news page closely to be the first to know when the preorder line opens. With a March initial delivery date, the wait shouldn't be long.