According to leakster @RODENT950, the first 1” sensor built specifically for phones is coming soon and Huawei P50 flagships will be the first to implement it. The sensor question includes the Sony IMX800, which will be released in April.
The leakster is teasing three-camera variant Por+, Pro, Vanilla. The top Huawei P50 Pro + will have everything: a wide, ultra-wide, telephoto and periscope lens, and a 3D TOF sensor. The P50 Pro will hold the periscope but will lose the mid-range telephoto-lens (and TOF sensor). Finally, the Vanilla P50 model will get a standard wide + ultra-wide + telephoto configuration.
In the previous indication, all three will feature the 1” IMX800 in their main cameras. This case in the P40 series where all three had the same 1/1.28” Sony IMX700 sensor. Anyway, the P50 series is expected in late March, at least according to unofficial information.
The leakster believes that the Sony IMX800 will stick with the same formula as the IMX700, namely 50MP resolution and RYYB color filter. It will go up against Samsung’s GN2, a 1/1.12” sensor with 50 MP resolution and next-generation Dual Pixel AF.