New Olympus, Sony, Sigma and Fuji rumors!

We have a couple of new mini rumors to share:

Sony:
Sony should announce a new A7rII and a new 50MP A9(?) camera soon.

Fuji:
Fujirumors reports about a Fuji interview. New 2x converter could come and a new sensor has to be designed to make 4K video possible.

Olympus:
The E-M1II could have a new 1/32.000 electronic shutter (Source: 43rumors).

Sigma:
Sigma Rumors reports that a new 24mm f/2.8 ART lens will be released in September.