Here is some additional information (check pricing) on the upcoming Sigma 70-200mm f/2.8 DG DN OS Sports lens for E-mount and L-Mount that will start shipping in December (see also this post):
The SIGMA 70-200mm F2.8 DG DN OS | Sports, a premium, large-aperture zoom lens for full-frame mirrorless cameras. In addition to the expressive imaging capabilities thanks to the latest optical design, this lens offers a high level of performance and features that meet the expectations of professionals in both still and video, including high-speed autofocus with HLA (High-response Linear Actuator), optical stabilizer with the latest algorithm "OS2", and the superior weather resistance of SIGMA's Sports line. Coming for Sony E-mount & L-Mount.
Sigma announces 10-18mm f/2.8 DC DN and development of 70-200mm f/2.8 DG DN
Sigma announces 10-18mm f/2.8 DC DN and development of 70-200mm f/2.8 DG DN