Sigma 28-105mm f/2.8 DG DN Art lens leaked before the official announcement (for Sony E and Leica L mount)

The previously rumored Sigma 28-105mm f/2.8 DG DN Art lens for Sony E and Leica L mount leaked a few hours before the official announcement:

Lens structure: 13 groups and 18 lenses (including 2 FLD fluorite-grade low-dispersion lenses, 1 SLD special low-dispersion lens, and 5 aspherical lenses)
Maximum aperture: F2.8
Minimum aperture: F22
Aperture blade count: 12
Minimum focusing distance: 40cm
Maximum magnification: 1:3.1 (105mm)
Filter size: 82mm
Lens size: φ87.8mm x 157.9mm (L mount)
Weight: 995g (L mount)

The rumored Sigma 28-105mm f/2.8 FE lens will be announced on September 5th

Sigma is rumored to announce a new 28-105mm f/2.8 lens in September