Sigma has confirmed pricing and early May 2013 availability for the redesigned 120-300mm F2.8 DG OS HSM lens and the its lens USB dock.
The Sigma 120-300mm f/2.8 DG OS HSM lens will retail for $3599 and is available for pre-order at B&H Photo and Adorama.
The new lens USB dock will retail for $59 and is available for pre-order here at B&H Photo.
You can see my previous look at these new products here in my CES 2013 report.