For those of you that were waiting, the P3V3 module is back in stock. This revision breaks out the VDDA pin so that you can provide a different reference voltage if your circuit requires it. Please remember that the on board BlinkUp circuit is tuned for a 3.3V reference and changes to the reference voltage will also change BlinkUp tuning. This revision uses a 22K photo transistor bias resistor to improve the overall performance of the BlinkUp circuitry.
As always, thank you to the Electric Imp community for your support.
Joel @ MakeDeck