They have 18 UAVs / drone ideas in the article and one very cool looking UAV on the front cover that's not in the article.
The list is:
Avenger
Embla
Mantis
S-100 Camcopter
Samarai
SensorFly
Ion Tiger
Phantom Ray
SkyLite
RQ-170 Sentinel
Vulture
Demon
Excalibur
Global Observer
Zephyr
Boeing HALE concept
Robobee
I couldn't find any information on the last one in the article, BAE's Dragonfly UAV, but I did find a similar project called the DelFly Micro.
And I also found this one looking for the Dragonfly UAV:
Dragonfly DP4x