In development is revision 3 of the SubPos Node. This version is a simplified variant of the development Nodes and would be close (feature wise) to the final product:

This version has a micro USB connector which is used to configure the device via a serial console as well as power it (it now uses a PIC18F25K50 to do this). In addition, the Nodes will allow for firmware flashing of both the ESP module and PIC over USB.