• Gulf Air may add JetZero's Z4 blended-wing-body airliner to its fleet.
• Japan Airlines also expressed interest in the Z4 at Farnborough Airshow.
• The Z4 is a blended-wing-body aircraft design.
• Gulf Air's potential acquisition could signal interest in sustainable aviation solutions.

Gulf Air's consideration of the Z4 may indicate a shift towards more sustainable and efficient aircraft designs, which could benefit the airline in terms of fuel efficiency and reduced emissions. This move may also suggest that blended-wing-body technology is gaining traction in the commercial aviation sector, potentially influencing future aircraft development and procurement decisions.