Here is another set of rumored Panasonic Lumix Cine camera specifications (this time for a Panasonic S1H):
Panasonic Cine Lumix S1H
Around 20MP full-frame CMOS sensor
L-mount
Slightly bigger than Panasonic S1 & S1R
6K video 24p, 4K video 60p
14bit Dynamic Range
10bit 4:2:2 internal at 30p and external 60p
Full built-in log settings
The official announcement will be on May 31st, 2019