I feel like the new model, the new Fujifilm GFX 100S II, it does provide some notable improvements and upgrades over the 100S, but those improvements are mostly for people who shoot handheld.
[T]he excellent vignette performance, the expanded focal length range to 14 millimeters, and the superior detail and sharpness of this lens on newer Canon cameras like the R5 and the R6 is worth paying extra for compared to picking up an older EF lens [...]