SonyAlphaRumors spilled out the info about the two future Full Frame sensors that will go on market in 2019. These sensors are NOT for exclusive Sony use. They will be available for any camera company. It means Leica and Panasonic could on paper decide to use them too. Sigma will not as they alreayd said they will make a Foveon sensor.
Sensor 1:
60MP
16 channels (which is crazy, normally it should be 8),
4.6FPS@16bit
12FPS@14bit
8k30P@12bit
8K60p@10bit
4k60p@12bit
FHD300P@10bit–Sensor 2:36MP
10FPS@16bit
60FPS@10bit
on-chip PDAF
Maybe Leica will use that sensor on their future SL camera. Panasonic might launch a camera with the 60MP sensor in early 2020?