https://www.techradar.com/news/sigmas-bokeh-master-has-price-and-availability-confirmed

Sigma has confirmed pricing and availability information for its latest wide-aperture f/1.4 Art lens, the 105mm f/1.4 DG HSM | Art. 

Canon, Nikon and Sigma shooters will be able to get their hands on the lens in June, provided they've got £1,499 / $1,599 going spare (Australian pricing is still to be confirmed). And you won't miss out if you've got a nice new Sony full-frame camera, as there's a version coming for Sony's FE mount, although Sigma is still to confirm when that's going to ship.