Ok so far both of these are stable. They are the same pcb with the same parts except for the jumper on top and resonator on bottom. 5v version is 16mhz and 3v3 version is 8mhz.
I’ve even created a little Test / Programming rig for them. It’s nice and simple and best of all it works!
These new version will be for crowd supply most likely. I’m trying to get price down which is possible only by wholesale aka bulk pricing.
I’ll be posting a link soon for them so keep checking back or subscribe to my blog for updates.