In December 2022 a new prototype (#2051) started taxi tests at CAC. It was speculated to be the first "full status" J-20 (Status III/J-20B?) featuring a slightly raised cockpit with a deeper spine housing additional avionics/fuel. Consequently the aerodynamic drag is  reduced. The prototype also has modified engine intakes with a slightly smaller bump at the leading edge, suggesting it might be powered by the WS-15 engines which require a bigger air flow. The hexagonal heat exchanger inlets/outlets in the engine intake wall were also removed.