Sigma announced the release of the USB dock for Sigma A-mount lenses. Price will be $59 but there is no preorder option yet. With the dock you can perform lens firmware updates and customize autofocus and OS! It will work with the new superb 50mm f/1.4 ART lens too. The lens can be preorderd in USA at BHphoto (Click here) and Adorama (Click here). And since today also in UK at Wexphotographic (Click here).
Source: Sigma Japan.