Three boards arrived from OSH Park today. First 4-Layer board I have ordered from them. Quality is pretty good. Silkscreen is a bit weak but that is probably due to me running the weight of the text to thin.
Internal two layers are GND and 3.3V. Outside two layers are signals.
Close up of the kickass OctoPROBER logo.
Character display mounts on the back of the PCB. This way the PCB can be mounted to the front of the case without silly long button caps on the tact switches.