Sigma has delayed the release of the new zoom lens. Sigma 120-300 f/2.8 DG OS HSM lens was to be the first in their “sport” line of lenses. Along with the lens, the USB dock they announced with it has also been delayed.
Sigma suggests that the delay is due to sourcing parts for the new lens. It was originally scheduled for a March release, but now a release date is undetermined.