Panasonic G9 gets 10bit 4K recording, as Panasonic roll out major firmware update for numerous cameras including S1 and GH5 - EOSHD.com - Filmmaking Gear and Camera Reviews
Amazon.com : Panasonic LUMIX GH5 4K Digital Camera, 20.3 Megapixel Mirrorless Camera with Digital Live MOS Sensor, 5-Axis Dual I.S. 2.0, 4K 4:2:2 10-Bit Video, Full-Size HDMI Out, 3.2-Inch LCD, DC-GH5 (Black) :
Get 4K60 10bit 422 Pro Res HLG Video with the Lumix GH5 // GH5 HLG Profile and the Atomos Ninja V - YouTube
Panasonic Lumix DC-GH5 Review: Digital Photography Review