Sigma official announcement will be held on April 3, 20:00 online conference.
The three lenses all support L and E mount, while the 23mm F1.4 DC DN lens will also support the Fuji X mount.

Sigma 17mm F4 DG DN | Contemporary Specifications (full-frame):
- Optical structure: 8 groups and 9 blades
- Closest focusing distance: 12cm
- Maximum magnification: 1:3.6
- Filter diameter: 55mm
- Size: φ64.0mm x 48.8mm (E-mount version 50.8mm)
- Weight: 225g (220g for E-mount version)
- Reference price: $600 (currently about RMB 4122)
Sigma 50mm F2 DG DN | Contemporary Specifications (Full Frame)
- Optical structure: 9 groups and 11 lenses
- Nearest focusing distance: 45cm
- Maximum Magnification: 1:6.9
- Filter diameter: 58mm
- Size: φ70.0 x 68.0mm (E mount version 70.0mm)
- Weight: 350g (E-mount version 345g)
- Reference price: $650 (currently about RMB 4466)
Sigma 23mm F1.4 DC DN | Contemporary Specifications (APS-C)
- Optical structure: 10 groups of 13 lenses
- Nearest focusing distance: 25cm
- Maximum Magnification: 1:7.3
- Filter diameter: 52mm
- Size: φ65.8 x 76.9mm
- Weight: 340g
- This one is for L, E and Fuji X-mount
- Reference price: $500 (currently about RMB 3435)