zwolf:

Would it be possible to add an option to the tuner midi control that works as a dedicated tuner on/tuner off CCs? Would be very useful for me…

Well, you can map a MIDI CC to toggle the tuner to on or off.  The option was missing from H9 Control for a while, but it's in the latest release. Did you not know this?  Or are you saying you'd like one MIDI CC to toggle it on and a different one to toggle it off?

zwolf:

Any estimates as to how long before they get a shipment?

Soon, we've been putting the finishing touches on the new H9 OS.  The units could go out any day now.