On June 1st Sigma will announce the new lens. Here are the leaked images and specs via digicame-info:

• 16-28mm f/2.8 DG DN | Contemporary
  ・Lens configuration: 16 elements in 11 groups (5 FLD glass, 4 aspherical lenses)
  ・Minimum shooting distance: 25cm
  ・Maximum magnification: 1:5.6
  ・Number of aperture feathers: 9 (circular aperture)
  – Filter diameter: 72mm
  ・Size: φ77.2 x 100.6mm (102.6mm for E-mount plate)
  ・Weight: 450g
  ・Mount: L-mount, Sony E-mount
  ・Estimated release date in Japan: June 17, 2022
  ・Overseas price: $899

The same source that leaked the lens specs says the new Sigma 16-28mm L will be announced on June 1 at 21 Tokyo time.

16-28mm F2.8 DG DN | Contemporary specs
・ Lens configuration: 16 elements in 11 groups
・ Shortest shooting distance: 25cm
・ Maximum shooting magnification: 1: 5.6
・ Number of aperture blades: 9 (circular aperture)
・ Filter diameter: 72mm
・ Size : Φ77.2 x 100.6mm (E mount version is 102.6mm)
・ Weight: 450g
・ Mount: L mount ・ Sony E mount

Here are the leaked Laowa 90mm f/2.8 L-mount lens specs:

• 13 sheets in 10 groups (3 ED lenses and 3 high-refractive)
• 13 diaphragm blades
• Shortest shooting distance 20.4cm
• Filter size 67mm
• Size 74 x 120mm
• Weight 619g
• mount Sony E / Canon RF / Nikon Z / Leica L

The lens will be announced on May 23.

For what’s worth. I got this from an anonymous source:

Panasonic S5H: It’s a lightweight camera, but likes the 15Mp version of S1H. S5H supports FF 4.8K oversampled UHD-4K 120fps with the DFD AI. Also, FF 16:9 4.8K 60fps or FF open gate 4.8K 48fps with the ‘Dynamic Range Boost mode’ is supported.

In his latest LUMIX live-session, Sean Robinson did place another easter egg. While picking up a card reader that “accidentally” fell to the ground, he showed a printing on the back of his t-shirt: “S1CK A.F.”

Likely a hint for a new camera with phase detection AF? Sean did a similar “eater egg” action before the GH6 launch. And I guess this time he is doing it for a new S camera!

–
Thanks Harry!

We will not only get a new Sigma 50mm f/1.2 and f/2.0 lens. But also this nice zoom:

• 16-28mm F2.8 DG DN | Contemporary
  ・ Lens configuration: 16 elements in 11 groups
  ・ Shortest shooting distance: 25cm
  ・ Maximum shooting magnification: 1: 5.6
  ・ Number of aperture blades: 9 (circular aperture)
  ・ Filter diameter: 72mm
  ・ Size : Φ77.2 x 100.6mm (E mount version is 102.6mm)
  ・ Weight: 450g
  ・ Mount: L mount ・ Sony E mount

Announcement should happen within the next 3-4 weeks!

via Digicameinfo

Asobinet, who spotted the patent, says [google translated]:

Looking at the lens configuration, it is very similar to the 18-50mm f/2.8 DC DN (not 100% match). Perhaps F2 zoom was one of the options during the examination stage of practical use lenses. However, now that F2.8 zoom has appeared, it seems unlikely that F2 zoom will see the light of day.

Summary

• [Public number] P2022038820
• [Name of invention] Large aperture zoom lens
• [Dapplication date] 2020-08-27
• [Applicant] [Identification number] 000131326
  [Name or name] Sigma Corporation
• [Issue] We provide a small large aperture zoom lens that is suitable for digital cameras and video lenses, with good aberrations and can be used for quick focus operation.
• [0015] This invention is based on a positive lead zoom lens for the above challenges, suitable for digital cameras and video lenses, with good aberrations, and quick focus movement, small large apertures. The purpose is to provide a lens.

Example 1

• Focal length: 18.50-48.50
• F value: 1.94-2.10
• Angle of view: 77.86-31.58
• Statue height: 14.20
• Total length: 115.36-137.89

via Fujirumors