Sigma RF Mount Lenses Coming Around CP+ 2020 ?

Sigma has already released their E-mount and L-mount mirrorless lenses since mid-2019. According to latest rumors, Sigma will also release there RF -mount mirrorless lenses in early 2020, probably around CP+ 2020. If true, it would be great for the EOS R system.

Currently, Sigma has released 4 E-mount/L-mount mirrorless lenses, they are: Sigma 35mm f/1.2 Art, 45mm f/2.8 Contemporary, 14-24mm f/2.8 Art, 24-70mm f/2.8 Art Lenses.