ePhotozine published the full Panasonic GH5 review. The final verdict is:
If you do any form of video work, then the GH5 will be an obvious choice. If you primarily want a camera for stills photography, with video a secondary consideration, and you want a Micro Four Thirds camera, then you may be better served by the E-M1 Mark II, which offers higher (stills) shooting speeds, and a more compact body, whilst also offering 4K Cine recording. Whichever you choose, there are benefits to each camera, both capable of producing excellent images, and we’ll look at the differences in more detail shortly.
The GH5 benefits from easy to use menus and a wealth of customisable controls. For those that like a Digital SLR sized camera, the GH5 will suit, but with the benefit of the latest technology and advances, including 5-axis sensor image stabilisation, a high resolution electronic viewfinder, high speed continuous shooting, and more video features than most of us can possibly ever need. Panasonic has thrown everything it has in to the GH5, and produced a camera that delivers excellent results.
GH5 at Amazon, BHphoto, Adorama and Panasonic US. In EU at Amazon.de, Cyberport.de and ParkCamera.