Sigma issued two press releases today:
1) SIGMA 50mm F1.4 DG HSM | Art and SIGMA 85mm F1.4 DG HSM | Art for Sony E-mount are scheduled to start the shipment in May, 2018. (sigma-global.com/en/news/2018/05/11/1662/)
2) Launching date of Sigma 70mm macro Sony E-mount is not determined yet. (sigma-global.com/en/news/2018/05/11/1657/).
You can see a first impression review of this lens here: sigma-global.com/en/lenses/cas/product/art/a_70_28/impression/.
Lens specs here: sigma-global.com/en/lenses/cas/product/art/a_70_28/
Sigma FE lens preorder links:
All lenses listed on one page at BHphoto (Click here). In detail:
Sigma 14mm f/1.8 for $1,599 at BHphoto and Adorama.
Sigma 20mm f/1.4 for $899 at BHphoto and Adorama.
Sigma 24mm f/1.4 for $849 at BHphoto and Adorama.
Sigma 35mm f/1.4 for $899 at BHphoto and Adorama.
Sigma 50mm f/1.4 for $949 at BHphoto and Adorama.
Sigma 85mm f/1.4 for $1,199 at BHphoto and Adorama.
Sigma 135mm f/1.8 for $1,399 at BHphoto and Adorama.