Qantas doesn't even have its first Boeing 787 Dreamliner but the airline is already talking to Boeing about a 'super-stretched' 787-10 edition.

"We would be very exited about a longer and larger versions of the 787" Qantas CEO Alan Joyce admitted at today's media preview of the 787 Dreamliner, "and we are obviously very interested in talking to Boeing about future developments."

For his part, Boeing 787 Vice President Mike Sinnett said the airline was definitely looking at the 787-10 and "right now we like what we see."

"We've (already) designed a version of the 787-8 which is stretched by 20 feet and adds 50 passengers, and that's the 787-9. Further out than that we're thinking about what it would mean to stretch the -9 even further to add additional passenger capacity."

And how many passengers would this drawn-out Dreamliner hold? With Jetstar already planning to pack 300 travellers into its two-class 787-8 and 350 in the longer 787-9, the 787-10 might hit the 400 mark – more than a Qantas Boeing 747!