Chinese defense sites have published images of what should be the second prototype of the Shenyang FC-31 (J-31). A major difference has emerged with this second prototype with respect to configuration of vertical tailplanks. This FC-31 has a cut tail, while the first prototype designated J-31, had an almost triangular tail with a horizontal top. The status of the FC-31 is not clear. The J-31 was not presented at the Zhuhai Air Show in 2016.