A new inexpensive tool for aerial photography - radio controlled helicopters - is used here to film climbers on Trango Towers in Pakistan. More details here. I can easily imagine these drones being used to scout new routes, check on snow/ice conditions, etc. And I am sure they will be highly controversial because they are not traditional and natural like using binocs and maps. I can't tell which 'copter they used from the video, but you can get one with live camera feeds fairly inexpensively.
Mammut 150 Years Peak Project: Trango Tower, Pakistan (6286m / 20,623ft) - RC Helicopter Sample Footage from Corey Rich on Vimeo.