Sigma to Announce 24-70mm f/2.8 Art Ahead of CP+ Next Month? [CR2]

We’re told that Sigma is aiming to announce a 24-70mm f/2. 8 OS Art series lens ahead of CP+ in Yokohama, Japan, which starts on February 23, 2017. We’ve seen one patent for a new Sigma 24-70 f/2.