This is certainly good news for SD1 owners.
All twelve of them.
Sigma updates SD1 and Photo Pro to support 18-35 F1.8 DC HSM lens
Posted by Chris Roubis on 30th, Oct, 2013
Source Article from http://www.dpreview.com/news/2013/10/30/sigma-updates-sd1-and-photo-pro-to-support-18-35-f1-8-dc-hsm-lens
Started out doing photography at the age of 6 using an uncle's old 1940 kodak brownie box camera. At 15 years of age, I decided to buy my very own 1975 Praktica SLR camera. I now shoot with a Nikon D850. I do unpaid TFP and commercial paid work.