Sigma will soon announce those three new lenses:

17mm F4 DG DN | Contemporary (Full Frame)

• Lens construction: 9 elements in 8 groups
• Shortest shooting distance: 12cm
• Maximum magnification: 1:3.6
• Filter diameter: 55mm
• Size: φ64.0mm x 48.8mm (50.8mm for E mount version)
• Weight: 225g (220g for E-mount version)
• Magnetic metal cap

50mm F2 DG DN | Contemporary (Full Frame)

• Lens construction: 11 elements in 9 groups
• Shortest shooting distance: 45cm
• Maximum magnification: 1:6.9
• Filter diameter: 58mm
• Size: φ70.0 x 68.0mm (70.0mm for E mount version)
• Weight: 350g (345g for E-mount version)
• Compatible with magnetic metal caps

23mm F1.4 DC DN | Contemporary (APS-C)

• Lens construction: 13 elements in 10 groups
• Shortest shooting distance: 25cm
• Maximum magnification: 1:7.3
• Filter diameter: 52mm
• Size: φ65.8 x 76.9mm
• Weight: 340g
• Mount: L mount, Sony E mount, Fujifilm X mount

via Asobinet

SonyAlphaRumors leaked the E-mount version of the new Sigma 50mm f/1.4 lens:

Sigma will soon announce this news 50mm L-mount lens:

50mm F1.4 DG DN｜Art

• Lens construction: 14 elements in 11 groups
• Shortest shooting distance: 45cm
• Maximum magnification: 1:6.8
• Number of aperture blades: 11 (circular aperture)
• Filter diameter: 72mm
• Size: 78.2 x 109.5mm (L mount)
• Weight: 670g
• Lens hood: LH782-02
• Lens cap: LCF-72 III

via Asobinet via Digicameinfo

First leaked images of the new Sigma lens!

Image on top shows the current 60-600mm lens for Nikon F and Canon EF (for about 2000 Dollars/Euro here on Amazon). 

Sigma confirmed it will announce “new products” on January 12th. Of course we already know that they will announce the new 60-500mm f/4.5-6.3 sports lens for Sony E and Leica L mount. Here are the specs:

60-600mm F4.5-6.3 DG DN OS | Sports 

• Lens construction: 27 elements in 19 groups
• Minimum Focus Distance: 45-260cm
• Maximum magnification: 1:2.4
• Number of aperture blades: 9 (circular aperture)
• New development adopted HLA (Hi-response Linear Actuator)
• Filter diameter: 105mm
• Size: φ119.4mm x 279.2mm (281.2mm for E-mount version)
• Weight: 2495g (2485g for E-mount version)
• Hood: LH1144-02
• Lens cap: LC-740E
• Tripod socket: TS-121

On top you can see the first leaked image of the new S-line roadmap. And here is the leaked price for the new gear that will be announced within hours:

DC-S5M2: $1997.99
DC-S5M2K: $2297.99
DC-S5M2X: $2197.99
DC-S5M2XK: $2,497.99
S-R1428: $797.99

via Asobinet