The newly released Capture One 10.1 update added support for the GH5 and new Panasonic lenses.

Quick Test with Panasonic GH5 Color Profiles – Shot in 4K

Utilising Focus Stacking and Focus Bracketing in Insect Photography (Cameras.Olympus).
Testing Veydra Mini Primes on the Panasonic GH5 (Newsshooter).
GH5 LIVE *test* (PhotoJoseph).
Where are the wild things in spring? (Olympus Imagespace).

Plenty of news on the facebook E-M1II group and the GH5 group.

Lior: “How is the Olympus E M1 Mark II as a hybrid camera? This is a 4K Video I shot during our vacation in the island of Madeira, great place, great camera. Took only camera with me, no tripod or gimbel, all hand held only: https://www.youtube.com/watch?v=tZnVVjAtZBw“

Andrew: “Is it sad that I get excited if I see an Olympus camera in a cool video? https://youtu.be/cOEBwBERPv4“

In a recent interview with Dpreview Sony said this:

Think about 8K video. To get that sort of resolution on a sensor, you need larger sensors, otherwise pixel sizes are too small. To get 8K from a micro four thirds sensor, for example, the sizes of the pixels have to be very small, around 2.3 microns. I think larger sensors are important to maintain image quality as we go to higher resolution video and stills.

So either Panasonic and Olympus will stop increasing Megapixels or they will have to find new ways to keep the Pixel size big (Foveon?). But I am pretty sure Panasonic and Olympus will increase the Megapixels. Also because Panasonic stated that they will make an 8K GH camera by 2020. And that would require a 33MP sensor.