You can download several versions of the 3D printable designs from GrabCad, you will need to create a free account to access the files. The most recent version is the gocupi mkII and is available here: grabcad.com/library/gocupi-mkii-1
Raspberry Pi SD boot image
The boot image that I ship with all new gocupi purchases is stored in my Google Drive and is quite a large file (7.7GB) but if you have the patience to download it I think it's worth it. I have setup the OS to take advantage of the Pi3's WiFi radio by acting as an access point that you can connect to just like any other wireless network. I use this feature with an SSH application on my phone, it's really handy. You can download the gocupi Pi3 image here.