Exciting - I just built up the latest PCB for the Pi HAT, check it out:
It's got a few changes from the previous version:
- Uses the low profile through-hole header sockets so it sits lower for a more streamlined enclosure
- It has an RGB LED on board for status indications, driven from the GPIO pins of course
- All of the surface mount components are on the underside now to make manufacturing a bit easier
Now I just need to modify the mechanical design for the new dimensions and I'll be able to do a full build to put up here next week.