The front camera will likely be an OmniVision OV50M 50 MP lens, which seems limited compared to the periscope telephoto but in reality is a rather impressive resolution for a selfie camera. All in, ...
Xiaomi 17 Ultra leak suggests Snapdragon 8E5 chip, new 50MP main sensor with improved ISZ, 200MP periscope, lossless multi-focal zoom, tele-macro, and high dynamic range.