UAV::Pilot, a Perl library for controlling the Parrot AR.Drone, has released version 0.4.
The big change for this update is streaming video to a file. Display in real-time is not yet implemented--that's coming in 0.5.
There are also some API changes in how event loops are initialized to make the naming more consistent. There will probably be another API change in the video handling in 0.5. Once I do a complete release, API changes will have a proper deprecation plan, but for right now I think it's fine to change things willy-nilly.