Air France has today debuted its first A380, which is to be deployed on the daily Paris Charles de Gaulle-New York JFK route in November, detailing the aircraft will be outfitted in a 538-seat configuration.
This This marks the highest-density layout of any A380 so far put in service. Emirates opted 489 seats, Singapore Airlines 471 and Qantas 450. At the other end of the spectrum, Reunion-based carrier Air Austral is expected to take delivery of two all-economy A380s configured with 840 seats in 2014
You can find loads more on how the the early A380 operators configured their ultra-large aircraft in this article on A380 interiors by Max Kingsley-Jones from Flight International last September.