I also spotted a report on the BBC today about the length of battery times being increased from 20-30 minutes to over an hour using Hydrogen fuel cells. Intelligent Energy's range extender offers several hours of drone flight time and reduces the downtime to a couple of minutes for recharging. The increase in the length of flights will be useful for many industries, however at this point it is cost prohibitive for the hobbyist. Hydrogen is an extremely explosive gas, I worry about the first terrorist attack that uses a drone powered with hydrogen, especially in the wake of the recent attacks in Brussels.
The United States Federal Aviation Authority announced a mandatory registration process for drones in December (2015) that applies to hobbyist drones from 0.25kg and 25kg which basically means that everyone needs to register. It costs $5. and requires you to mark on your drone your unique registration number. Interestingly you have to be 13 to register which I take to mean that you have to be at least 13 now to fly a drone. The registration process only applies to recreational use at this point, but the business rules are forthcoming from the FAA.
Registering your drone with the authorities, another blow for privacy. Am sure Mr Cameron will follow suit shortly, of course the charge for registration in the UK will be about the same cost as the drone.