Appearance/discussion of Academy units.

In general, as the Nival developers said in the interview, there are several development paths planned for each faction. And that's exactly what we see. 8)
For the Academy, one of the paths seems to be focused on mechanics. I really like this idea. 8) We produce golems, improve machine control, and in logistics (if they allow it), we can have a march of machines, and I think opponents won't be happy :-)