Hi Rik,
the development for the Pi version is stopped at this moment. We are waiting for google to do some move with the Android Things operating system. The Android Things OS is in a developer preview phase now, and it is not ready yet for a massive distribution of the image.
I would beg you to register to our newsletter to stay tunned. I will send out you a newsletter with development news and of course as soon as something with the Pi version happens, you will be notified.
Apologizes and regards.
R. Campos.