We always talk about powering cameras (and gear in general) as a big thing. I got to fly an Inspire 1 for an upcoming tutorial and was shocked at how much of our production hustle had to do with managing batteries. I am quite confident that battery and power management will be the next step in camera evolution.
Some companies are making bigger batteries (or adapters for bigger batteries), some companies solve the issue by making almost instantly-charging batteries, but this solution tops them all as it creates real of-the-air charging just by transiting a specific WiFi signal.
The system is called power over wifi and it literally creates a battery-free camera. At least in the sense that we perceive battery.