In reply to John2:
I've been wondering this as well. Quite cool if drones are now light and robust enough that you can carry them with you on such cutting edge ascents. And amazing the altitudes they can work at. Alternatively maybe a cameraman in base camp was flying it?
As a complete aside, isn't this news story a bit behind the curve? Planetmountain reported on this a month ago when it first broke. I know Lama's only just given more details, but a newsflash back at the end of October would've been good. I don't mean to be overly critical of the UKC news team -- just a suggestion!