The AirBus A380 Models
The A380 was initially offered in two models. The A380-800 original configuration carried 555 passengers in a three-class configuration or 853 passengers (538 on the main deck and 315 on the upper deck) in a single-class economy configuration. In May 2007 Airbus began marketing a configuration with 30 fewer passengers, (525 total in three classes), traded for 370 km (200 nmi) more range, to better reflect trends in premium class accommodation.
The design range for the −800 model is 15,400 km (8,300 nmi); capable of flying from Hong Kong to New York or from Sydney to Istanbul non-stop.
The second model, the A380F freighter, would carry 150 tonnes of cargo 10,400 km (5,600 nmi). The freighter development was put on hold as Airbus prioritised the passenger version and all cargo orders were cancelled.
Future variants may include an A380-900 stretch seating about 656 passengers (or up to 960 passengers in an all economy configuration) and an extended-range version with the same passenger capacity as the A380-800. (From Wikipedia)
According to TIME magazine:
The lack of engine noise—it’s 50% quieter than a 747-400 on takeoff—was downright eerie. The A380 is so big it’s difficult to sense its speed, and its upper deck is so far away from the engines the noise dissipates.