The second product of the J-XX program to be revealed to the public was the J-31. Revealed to the public in 2012, it clearly incorporates some stealth aspects, especially towards the front of the aircraft.
Testing began in October 2012, and in late 2014, the J-31 was displayed publicly at an airshow for the first time. The prototype mounts two Russian-designed RD-93 turbofans (the same engines as the MiG-29). The mockup shown at that same event seems to show that several changes to the design are in store. While the intended role of the J-31 within China is unclear, it does seem to be slated for export, with Pakistan reportedly planning to purchase up to 40 J-31s.