VIDEO: Quick J-20 recap from Singapore

China has been unusually open about the Chengdu J-20 in the last three weeks. The fighter has dazzled the world's media in taxi tests and in flight. Where the story goes from here is unclear. China has still not revealed the goals of the J-20 program. We don't know if it is intended as a one-off demonstrator, or the prototype for a funded production program. Greg Waldron, Flightglobal's deputy Asia bureau chief in Singapore, summarizes what we know so far.