Sigma officially announced the development of the new 16mm f/1.4 DC DN Contemporary mirrorless lens for Sony E-mount and Micro Four Thirds. The release date and price are TBD (check US pricing here). The lens hood will be available as an accessory (LH716-01).
Update: the Sigma 16mm f/1.4 DC DN Contemporary mirrorless lens will be released on November 19th.
In addition to the new 16mm f/1.4 and the already existing 30mm f/1.4 DC DN Contemporary, Sigma is also planning to release another middle telephoto lens for Sony E-mount and MFT (between 45mm and 90mm focal length, maybe even between 60mm and 90mm):
Sample photos can be found here. Lens design, MTF chart and full press release: