With every new passenger jet aircraft comes certifications. One of the certification required by international aviation law is the evacuation simulation. The goal for the simulation is to evacuate a full plane, passengers and crew, within 90 seconds using only half number of exits available, in the darkness (only aircraft emergency proximity lights allowed).
This new super jumbo jet Airbus A380 can carry more than 800 passengers (in economy-class seat configuration). With its enormous size, evacuation of the whole aircraft is not going to be easy. See in the video how they did it.