Sigma CP+ presentation: a new member may join the L-mount Alliance in the near future

Dclife published a recap of the Sigma L-mount presentation at the 2021 CP+ show:

L-mount has risen to the third most popular mount in Japan (based on the latest domestic sales data).
Sigma increased their market share since they joined the L-mount Alliance.
Many new L-mount products are scheduled to be released from Leica, Panasonic and Sigma.
There is a possibility that a new member will join the L-mount Alliance in the near future (Olympus, Pentax, Blackmagic?).