Hello to all Zynthianists,
for those who were following our common work about RTP-MIDI and noticed I became suddenly silent, the reason is very simple… I was extremely busy with something called MIDI 2.0.
Simply said, I belong to the MMA MIDI 2.0 Working Group, but up to now, group members were not allowed to publish anything related to MIDI 2.0.
Now that MIDI 2.0 is officially released (see here https://www.midi.org/articles-old/details-about-midi-2-0-midi-ci-profiles-and-property-exchange, I can explain what I am doing 
In two words, I am currently writing a JACK gateway to make the Zynthian one of the first (if not the first) MIDI 2.0 compatible synthesizers.
Why JACK ? Because JACK is “de facto” compatible with MIDI 2.0 (it has never been intended to be like that in JACK’s coder, but the fact is JACK handles MIDI 2.0 packets without any problems)
Of course, for now, Zynthian’s internal engines are still MIDI 1.0, but one marvel of the open source is that we don’t have to wait until software editors decide to change their products.
I plan to release the MIDI 2.0 gateway before end of March (if everything goes well), but if any Zynthianist wants to start to work on porting some engines to MIDI 2.0 and needs explanation about MIDI 2.0, just ask me 
Benoit