An article at Drone Life notes: “Recent contract for Black Hornets is an addition to the $39.7 million contract that the U.S. Army awarded FLIR in January of last year. The Black Hornets are designed to be used as part of the Army’s Soldier Borne Sensor (SBS) program.”
This illustrates that the US is still interested in smaller “nano” drones for the future. But the market isn’t that large and their overall role remains unclear.
The article notes: “Extremely light, nearly silent. FLIR sold 12,000 Black Hornet nano-UAVs to defense and security forces worldwide.”