In this interview with TowerJazz posted by Charbax you can find some interesting info:
Minute 7: He confirms that some Panasonic cameras use TowerJazz sensors
Minute 8: He sees a problem in the fact that Sony is also a camera market. So for example if there is competition on the supply Sony may give themselves the benefit instead of Nikon.
Minute 12:40: He says 8K and speed are definitely coming but the rela challenge is advancaments in High Dynamic Range.