Samsung announces 0.5um pixel

https://semiconductor.samsung.com/image-sensor/mobile-image-sensor/isocell-hp5/

Specifications:

Effective Resolution
 16,384 x 12,288 (200MP) 
Pixel Size
 0.5 μm 
Optical Format
 1/1.56" 
Color Filter
 Tetra²pixel RGB Bayer Pattern 
Normal Frame Rate
 7.5 fps @full, 30 fps @50MP, 90 fps @12.5MP 
Video Frame Rate
 30 fps @8K, 120 fps @4K, 480 fps @FHD (w/o AF) 
Shutter Type
 Electronic rolling shutter 
ADC Accuracy
 10-bit 
Supply Voltage
 2.2 V for analog, 1.8 V for I/O, 1.0 V for digital core supply 
Operating Temperature
 -20℃ to +85℃ 
Interface
 4 lanes (4.5 Gbps per lane) D-PHY / 3 trios (4 Gsps per trio) C-PHY 
Chroma
 Tetra²pixel 
Autofocus
 Super QPD (PDAF) 
HDR
 Smart-ISO Pro (iDCG), Staggered HDR 
Output Formats
 RAW8, RAW10, RAW12, RAW14 
Analog Gain
 16x @full, 256x @12.5MP

Excerpt from Baidu news (translated with Google translate): 

Samsung releases ISOCELL HP5, the world's first 0.5µm ultra-fine pixel 200 million image sensor

...  Samsung officially released the new 200-megapixel image sensor ISOCELL HP5, which is expected to be the first telephoto camera of the OPPO Find X9 Pro mobile phone.

... ISOCELL HP5 sensor is 1/1.56 inches in size, has an ultra-high resolution of 16384 x 12288, and compresses the unit pixel size to 0.5 microns. It is Samsung's first 200 million image sensor in the world equipped with 0.5µm ultra-micro pixels.

To overcome the challenges posed by small pixels, ISOCELL HP5 integrates multiple cutting-edge technologies. Among them, dual vertical transfer gate (D-VTG) and front deep trench isolation (FDTI) technologies work together to effectively increase the full well capacity of each pixel, or its ability to accommodate light signals.