What’s bigger than “jumbo?” An Australian news outlet has reported that Airbus is ready to pull the trigger on development of a stretched A380 — an airplane that is already the largest capacity airplane ever to fly. Not surprisingly, Airbus has yet to comment on the report, which one would classify either as a leak, if true, or a rumor, if not. The new model reportedly will seat as many as 1,000 passengers in an economy-only configuration but probably only a friendly 700 or so in the standard layout. Airbus has already announced the development of the 900-passenger A380-900, with launch customers ready to take delivery in 2014. While the -900 will be huge, it won’t be the biggest airplane in the world. That distinction belongs to a different type altogether.