It could be very soon when you might be getting your Amazon Deliveries via Drones and although this can be made possible only for the US as of right now I am hopeful that once Amazon gets some results out of their Drone Program they will obviously branch out to other Countries. Now whether this Delivery via Drones is a viable option or not is something that is still debatable.
If you ask me I can say that I believe that there is definitely going to be a learning curve to this whole Drone Delivery and it's going to be a long time since it is made available for everyone. Plus Amazon just got the patents so they may also take a safety-first approach for this. I also have a conflicting opinion of this Drone Deliveries as that would most definitely take out a lot of Jobs at Amazon so yeah on one hand I would love to see the new Delivery System in action but in the other hand, I also don't want the people to lose their jobs because of that.