There was some discussion of them last year? I think that some of the reasons for not seeing them were that demand for them isn't very high so they don't have a lot of priority, and implementing them would eat into the unit's available memory.
There is
this though for the FM3 and FM9:
I needed that a few days ago when I wanted to change a bunch of presets, remembered it was available, and let the editor chug through the changes. It worked fine, it just wasn't as fast as turning a knob and letting the modeler do it internally.