So there's a new Mini, but I didn't see any mention about...

[Black]

For all we know there could be other reasons Apple is not motivated to make the Mini smaller. A lot of people may still have a bias against it due to the perception that something that small couldn't possibly be a 'real' computer.... it took me a while to overcome that perception even after I bought my 2009 Mini....
Maybe someone at Apple snuck some market research in there....