Panasonic's S5 is a miniaturized hybrid of the S1 and S1H, with a 24MP sensor and 4K/60p video. A planned firmware update will even add 5.9K RAW video.
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Panasonic Lumix S5 Mirrorless 4K Full Frame L-Mount Camera for Serious Photographers & Videographers: Compact, Lightweight Portability; 24.2-MP CMOS Sensor; 4K 60p, 4:2:2 10-bit Recording; 4:3 Anamorphic Support; 5-axis Dual I.S.; 14+
Panasonic Lumix S5M2 Full Frame Mirrorless Camera with 20-60mm Lens and S S50 50mm f/1.8 Lens