For what’s worth. I got this from an anonymous source:
Panasonic S5H: It’s a lightweight camera, but likes the 15Mp version of S1H. S5H supports FF 4.8K oversampled UHD-4K 120fps with the DFD AI. Also, FF 16:9 4.8K 60fps or FF open gate 4.8K 48fps with the ‘Dynamic Range Boost mode’ is supported.