Sorry for the delay, the sailing season is on and we also need our salt dose 
We changed the manufacturer because the old one was always short of components, we made some changes and we sent new prototipes to the new manufacturer last week. Everyone is on vacation so it will take 4 weeks
It is hard to give a date for the the first batch, hopefully all is working properly on these prototypes.
Yes, we will publish the diagram and pcb layout. You will not need any software or driver for this HAT, you will need just OpenPlotter settings which is fully open-source as you know.
We changed the manufacturer because the old one was always short of components, we made some changes and we sent new prototipes to the new manufacturer last week. Everyone is on vacation so it will take 4 weeks
It is hard to give a date for the the first batch, hopefully all is working properly on these prototypes.
Yes, we will publish the diagram and pcb layout. You will not need any software or driver for this HAT, you will need just OpenPlotter settings which is fully open-source as you know.