Ok, the title is a little misleading, its not that the robots themselves are getting smarter it’s that the programming is getting better.
A "swarm" of simple-minded robots that teams up to move an object too heavy for them to manage individually has been demonstrated by robotics researchers.
The robots cannot communicate and must act only on what they can see around them. They follow simple rules to fulfil their task – mimicking the way insects work together in a swarm.
See? Nothing to worry about, no robot revolt is on the horizon. Well, the horizon is a long way off at any rate. But I will say, let me be the first to welcome our new robot masters. Let their reign be long and benevolent.
Robot swarm works together to shift heavy objects – tech – 17 October 2006 – New Scientist Tech

Ok, not 100 % invisible but it’s just going to be a whirring blur if you happen to spot one. The craft is powered by two propellers at one end and uses just a half of a wing to fly. Huh? Half a wing? Talk about cutting costs… Lift is generated by having the plane spin around its center of mass that is in space back behind the wing and between the motors. This gives an impressive amount of control to the craft while making it very hard to see. When coupled with the VeraTech proprietary panoramic camera system this will provide video surveillance within 75 feet of a target. The system is very light, only four pounds for the two foot version.
This so reminds me to the high altitude research project that was dreamt up by