In an interview with 60 Minutes Sunday, Amazon CEO Jeff Bezos laid out his vision to incorporate drones into delivery service by 2015. Among the factors he listed as obstacles to his plan was the approval of the Federal Aviation Administration (FAA), which is trying to meet a 2015 deadline for the full incorporation of unmanned aerial vehicles. On its web page about the drone project, Amazon explicitly ties its deadline to the FAA's, saying, "We hope the FAA's rules will be in place as early as sometime in 2015. We will be ready at that time."
Below is Amazon's video about its Amazon Prime Air delivery project.