Sony has registered six new Full Frame sensors. Some of them might be used on future Panasonic-Sigma-Leica cameras too. What’s particular is that the sensor named IMX521 uses the Quad Bayer Structure. Sony writes:
HDR function is available by dividing exposure time in the 4 same color pixels into long exposure pixels and short exposure pixels. or dividing conversion gain in the 4 same color pixels into LCG pixels and HCG pixels.
Quad Bayer RAW function makes it possible to readout 4 same color pixels without addition.
When normal operation. 4 same color pixels are added and made 1 pixel, and output as bayer pixel array. In addition, a group of divided 4 same color pixels is defined as 1 pixel unit in this product specification.
Here are the short sensor specs:
IMX311: 48,9MP (45° deg. square pix array)
IMX313: 48,9MP (16bit A/D, stacked 3:2, 30p at 16:9 FULL 8k readout. 60p at 6k with crop.)
IMX410: 24.6MP (24mpix, 19fps for photography. 6k 40fps, 4k crop 100fps.)
IMX521: 15MP with Quad Array