China jet upstages US defence chief visit
Sydney Morning Herald
VIDEO: Stealth Race: China test flies Chengdu J-20 ‘Black Eagle'
Key point: It's a demonstrator, not a production model. China is years from getting to production model.
VISIT: Centre for Analysis of Strategies & Technologies (CAST)
Minor league open source on plasma stealth:
Secret revealed: China’s 4th-generation fighter plane will use the plasma stealth technology
Mo, J. J., S. B. Liu, and N. C. Yuan, “Study on basic theory for plasma stealth,” Modern Radar, Vol. 22, No. 3, 9–12, 2002 (in. Chinese)