I'll just copy a posting I mage on GS, since this forum is more relevant for it:
One thing I've been wondering about is how system parameters will be edited - like MIDI channel, local mode etc.. I can't see any button labels related to that. Did anybody get that explained on NAMM?
Speaking of this, I can see a nice method for editing any further parameters of the presumably software generated modulation generators. It goes something like this: hold the MOD button for 2 seconds until it starts blinking to enter edit mode, the left hand column lights up buttons in blue for those modules that have further parameters and each row lights up a button in green for each available parameter from column two and onwards, press a green button and it turns red with the associated parameter appearing on the display, use the data wheel to edit the value. Press the preset, seq or mod button to exit edit mode.
The kind of parameters I'm thinking of here are are e.g. trigger modes, looping modes and slope shapes for the envelopes, velocity and aftertouch curves etc. - the little things that didn't make it to the front panel and that you don't touch so often, but which adds to the synthesis power and playability.
Come to think of it, the system parameters could be edited in a similar fashion: say, hold the preset button for 2 seconds to enter system edit mode, a matrix button lights up in green for each available parameter, possibly grouped in rows (one row for MIDI, one row for program dump etc.), press a button, it turns red and brings up the parameter on the display, edit the value with the data wheel, exit by pressing any of the preset, seq or mod buttons. Oh yeah, and how about a song mode under the seq button...
That matrix panel has so much potential!