Currently working on this one, first prototype is done.
Got three buyers lined up, so ordered parts and will start 'production' soon.
It's got it's own mini site here.
Link collection to panelize the boards & speed up production. Gerbmerge tool, Kicad perspective on panelizing using Gerbmerge, Not use Eagle (my pcb tool of choice) but Gerbmerge because of repeatability.