Next Starship prototype built after SN11. It features hundreds of design improvements across structures, avionics, software and engine.
First Starship prototype to successfully land after a high altitude flight.
Last suborbital Starship prototype built after SN15, to which it is similar in design. SN16 was later scrapped as SpaceX gathered all data necessary through SN9-15 and shifted focus to the Orbital Flight Test.