Check out the page on Techradar. And all our rumored specs got confirmed! Here they are:
10.2MP newly developed multi-aspect sensor provides sufficient margin to get the same angle of view in 4:3, 17:9, 16:9, and 3:2 aspect ratios.
world-first 4K 60/50p recording in Cinema 4K (4096 x 2160)
internal 4:2:2 10-bit recording with V-Log pre-installed in camera.
Dual Native ISO Technology
The 225-area AF arrangement stays the same, but the GH5S can now focus in light levels as low as -5EV (on the GH5 it’s -4EV).
max ISO 51,200
The Panasonic Lumix GH5S will be available from the end of January priced at £2,199/$2,499 (body only)