The new Sigma 17-70mm f/2.8-4 DC Macro OS HSM lens is now in stock for Canon mounts at both B&H and Adorama.
It also appears to be in stock in the Sony mount option here at Adorama. Note that the Sony version does not include Optical Stabilization due to the built-in stabilization in Sony Alpha cameras; however, Sigma still prices the Sony mount version at the same price of the other OS versions.
All the other mounts are available for pre-order here at B&H or here at Adorama.
