Airbus Group SE said a new version of the A380 superjumbo is unlikely to enter the market until the mid-2020s as the double-decker jetliner's biggest operator, Emirates Airline, struggles with limits on flights from its home market. Emirates has pressed Airbus to develop a re-engined model of the world's biggest passenger plane, the backbone of its international fleet, promising an eye-popping order as reward. That initiative for the so-called Neo appears to be stalling as the largest international carrier faces capacity constraints at Dubai International airport, John Leahy, the European manufacturer's chief operating officer, said in an interview at Istat's annual conference outside Phoenix. "They're not in a position to go ahead, and if they're not in a position to go ahead with A380neo, we certainly aren't," said Leahy, who is also Airbus's chief salesman. "They would be a key launch customer."