The next medium format camera from Fujifilm is expected to offer an even higher resolution than the expensive Phase One XF IQ4. According to the latest rumors from a reliable source, Fujifilm is currently developing a GFX camera with a 180MP medium format sensor.
Fujifilm wants to simulate the film experience by having 30 shots fill up a 128 gb sd card
spoiler
/s
Well, you can just calculate the maximum number of bytes per image to see what the actual capacity is. 128M pixels * 3 bytes per pixel is 384 Megabytes. Should go down to 100 each after JPEG compression.
Increase by 25-50% if you want HDR color specs.