A little more detail on the new Sigma 24-105mm f/4 DG OS HSM lens came out today with the official press release. Apparently, the earlier confirmation via Sigma’s website was a bit premature and was subsequently pulled from their site until today when the press release hit.
We still don’t have a price; however, B&H has the lens listed with availability on the Canon version in November 2013. Check out all the mounts here at B&H Photo. Check out a couple more official images of the lens below.