We published the hardware files for the gateway today: https://github.com/bluzDK/gateway
These are preliminary, but we would love to hear peoples feedback. Specifically, if anyone is planning on using this for their own product, what do you think about the size and footprint? The PCB measures 1.1" by 2.1", though it tapers at one end. The plastic case, which is still in the works, will fit around this and add a bit more size.
This is about as small as we think we can go with the P1. To try and make this more compact would probably involve switching to the P0 which would require RF design.