Starting July 9th, Panasonic will provide new firmware updates for many Filmer cameras. For all supported MFT models (GH5(S), G9(1), G81 and GX9) there is the improved compatibility with the new LEICA DG VARIO-SUMMILUX 10-25mm / F1.7 to announce. Now a stepless aperture setting is possible for video recordings. And for the DMW-RS2 remote shutter release, the video REC switch can be deactivated in the camera's user-defined menu.
The mirrorless full-frame cameras S1 and S1R are more exciting: The new firmware should improve the stabilisation performance of the internal image stabiliser by half a f-stop from a maximum of 5.5 EV to a maximum of 6 EV. In Dual IS2 systems, the performance should even be increased from a maximum of 6 EV to a maximum of 6.5 EV.
Also the autofocus performance should have been further optimized and there are new functions: AF-ON: Near-Shift] focuses preferably on closer objects while[AFON: Far-Shift] can be used for more distant objects. To this end, AF tracking in tracking mode for video recordings has been improved. Last but not least, the Live View image should now be more visible during autofocus.
But only for the S1 there will be further functions with the July 9th update, which some filmmakers will certainly be waiting for eagerly:
So only the upcoming 1.2 upgrade opens the activation of the software key DMW-SFU2. This software key will cost 199 Euros, but will still be available free of charge in a special offer for all 
registered existing customers until 30.9.2019.
With this key, the camera receives the long-awaited V-Log upgrade and can then record internally with 10 bits 4:2:2 to 30p without HLG. The external HDMI output expands to 4K60p/50p(PAL) 4:2:2 with 10bit.
In addition, there is a V-Log preview option in the display and even a Read-LUT function with which you can install your own LUTs on the S1.
There is also a WFM (Waveform Monitor) display function and high-resolution audio recording options with the optional XLR microphone adapter DMW-XLR1.
;)