From PlusberryPi indiegogo uptade of Oct 24, 2015 at 10:02PM https://www.indiegogo.com/projects/plusberry-pi-media-box-running-on-raspberry-pi
There's also an Arch Linux AUR package https://github.com/sealor/aur-plusberrypi-shutdown
People are already getting their units, and ask about how to setup the GPIO connectors. Sorry for the "getting started" page not up and running yet, here are the instructions for now (the site will be up in the coming days).