Bit unfair Lucifer - I suspect that Boeing have in mind just such a response to the A350-1000: another stretch of the fuselage and push the GE90s to 125k/lb (I think that's the max for engine out controllability?). Should give another 30 - 40 seats and move closer to where the 744 was plus complement the 748i while capping the A350-1000. I think that Lankana might be a smidgen off the mark with four engines though - why re-invent the A340-600? Come to think of it, why invent the A346 in the first place?!
