According to Sigma Japan, the new announced Sigma 24-70mm f/2.8 DG DN Art lens for L-mount is in short supply, early pre-orders far exceed expectations. So you’d better order this lens ASAP at B&H Photo Video/Adorama/Focus Camera.
From Sigma Japan:
Thank you for your patronage of Sigma products.
SIGMA 24-70mm F2.8 DG DN | Art is scheduled to be released on Friday, December 20, 2019. Orders that exceed our expectations at SIGMA 24-70mm F2.8 DG DN | It has become. As a result, we apologize to some customers that it may take some time for the product to arrive.
We apologize for the inconvenience of our customers and the people who are waiting for our products, but we are currently working hard on production, so please be patient.