Based on rumors and common sense CameraJabber guessed the possible Sony A7IV specs list:
- Camera type: Full-frame mirrorless
- Sensor: Full-frame 30Mp BSI CMOS
- Processing engine: Bionz XR
- Sensitivity: ISO 50-204,800
- Autofocus system: Hybrid with 693 phase detection points and 425 contrast detection points, Real Time Eye AF (Human and Animal for stills and video)
- Stabilisation: 5-axis IBIS and digital, up to 5.5EV shutter speed compensation
- Video resolution: 4K at up 60fps and 1080p at 240fps, 10-bit and 4:2:2 colour over HDMI
- Gamut: S-Log2 and S-Log3, S-Gamut3.Cine and S-Gamut3
- Still File formats: Raw, JPG, HEIF
- Screen: 3-inch 1,440,000-dot vari-angle touchscreen
- Viewfinder: 0.5-inch OLED with 3.69million dots
- Maximum continuous shooting rate: 10fps with mechanical or electronic shutter
- Storage: Dual: SD/SDHC/SDXC (UHS-II) and CFexpress Type A