The 102MP sensor will be paired with Fujifilm's X-Processor 5, also brought over from its more stills-focused cameras. That sensor is "approximately 1.7 times larger" than 35mm sensors, which themselves are considered relatively big for cinema cameras.

I bet you have asked many times over the years, “When will Fujifilm make a dedicated cinema camera?” Well, my friends, today is the day. FUJIFILM

Achieving rich, true to life visuals with the large format sensor Paving the way for a new era of film production and timeless masterpiece

Fujifilm is developing Fujifilm GFX Eterna, its first digital filmmaking camera, with a planned release next year. The camera will use the large-format GFX 102MP CMOS II HS sensor. It is about 1.7 times larger than a 35-millimeter full-frame sensor in combination with the X-Processor 5 high-speed image processing engine.