The Sigma 70-200mm F2.8 EX DG OS HSM is now available via many retailers in the US. The new optically stabilized lens was announced in February of this year, and is available in Canon, Nikon, Sony, Pentax and Sigma mounts. Check availability via the links below.
Sigma 70-200mm F2.8 EX DG OS HSM Availability
Canon mount: B&H Photo – Adorama – Amazon
a nice lens for this range with 2.8