The Chinese also displayed a large amount of unmanned vehicles -- air, sea, submarines, ground.
Longer term; this has interesting implications for "serious" scenarios -- IOW; for a long time, it's been really hard for anyone who isn't NATO (or the US) to make headway against a determined air defense network.
The near term (next 15~ years) future got interesting; since it's now plausible second world nations like say....Venezuela could actually credibly operate these UAVs; and they'd have a decent chance of penetrating modern air defenses and actually striking their targets -- IOW; stealthy UCAVs striking US troops along the FEBA in the next war we fight is plausible.