Found a couple of these interesting concepts while browsing through popular science magazine
Switchblade, diagonal swing wing UAV from Northrop Grumman
http://www.popsci.com/popsci/aviationspace/0f2505a52aceb010vgnvcm1000004eecbccdrcrd.html
Cormorant sub launched strike aircraft from Lockheed Skunk works.
http://www.popsci.com/popsci/aviationspace/63b259a122d89010vgnvcm1000004eecbccdrcrd.html
Some interesting ideas, whether they can get them to work properly in real life will be another matter entirely though.
Switchblade, diagonal swing wing UAV from Northrop Grumman
http://www.popsci.com/popsci/aviationspace/0f2505a52aceb010vgnvcm1000004eecbccdrcrd.html
Cormorant sub launched strike aircraft from Lockheed Skunk works.
http://www.popsci.com/popsci/aviationspace/63b259a122d89010vgnvcm1000004eecbccdrcrd.html
Some interesting ideas, whether they can get them to work properly in real life will be another matter entirely though.