Sony USA camera channel on Youtube has posted a sample video of recently announced Sony a6500 (B&H Photo, Adorama, Amazon) flagship APS-C mirrorless camera. The 4K movie above was shot with Sony Alpha a6500 and FE 70-200mm f/2.8 GM OSS Lens (Amazon, B&H Photo, Adorama), E 18-110mm f/4G Power Zoom Lens, and other Sony FE lenses.
From Sony:
The α6500 is capable of high-resolution 4K movies of wide dynamic range in the Super 35mm format favored among cinema camera users. Full pixel readout without pixel binning collects approx. 2.4 times* (6K equivalent) as much information as is required for 4K (QFHD: 3840 x 2160) movie output.