Nokishita Camera has leaked the first image of upcoming Sigma 100-400mm f/5-6.3 DG DN OS Contemporary Lens for Sony E-mount. This lens will be officially announced soon. Stay tuned.
Sigma will also announce a new Tele Converter 2x TC-1411 for Sony E-mount. Below is the leaked image of Tele Converter 2x TC-2011 for L-mount: