Sigma announced that the 50-150mm f/2.8 EX DC HSM and 70-200mm f/2.8 EX DG Macro HSM have undergone updates (which gives them a II in addition to all the other initials in their name). But as far as I can tell, there are no changes to the optics, feature set, or specifications, which means that this is more likely a compatibility update than anything else. Note to Sigma: if you're going to send out a press release, try to tell us what's new. So far, all I can find is the numeral II. Also, issuing a press release on a new product that isn't available yet (and which some potential purchasers might think obsoletes the old one) three weeks before Christmas doesn't seem like the best marketing strategy to me. What, this couldn't wait until PMA?