The Fujifilm GFX100RF is reported to come with a 35mm F4 pancake lens and a 100 megapixel sensor. It will be interesting to see just how small they can get this camera. Multiplying 35mm by 0.79 gets us the full frame equivalent of 27.65 or, rounded up, 28mm. This is a popular focal length for single lens cameras as we see in the Ricoh GR series which offer 28mm and 40mm options.
This camera won’t be cheap but it may just be the ultimate medium format travel camera. If it has competent video features that would be quite interesting also but we’re not holding our breathe for that.