I now understand what the 2016 Mini form factor will likely be.
If you consider the size of the motherboard in this photo, from a retina MacBook
https://d3nevzfk7ii3be.cloudfront.net/igi/O5qYbWSJKkqrV4Ub
Then consider the back of the Apple TV generation 4
http://photos2.appleinsidercdn.com/gallery/14203-9543-Screen-Shot-2015-09-09-at-63530-PM-l.jpg
That where I fear we're headed :-(
If you consider the size of the motherboard in this photo, from a retina MacBook
https://d3nevzfk7ii3be.cloudfront.net/igi/O5qYbWSJKkqrV4Ub
Then consider the back of the Apple TV generation 4
http://photos2.appleinsidercdn.com/gallery/14203-9543-Screen-Shot-2015-09-09-at-63530-PM-l.jpg
That where I fear we're headed :-(