Sorry if this has been discussed before but I recently searched "J-10c" on google and I found some photos I had never seen before. I am not sure if these are real, and they probably aren't. However, if you look at the exaust nozzel it is the same shape as the early J-10 prototypes that used the WS-10 engine. If this is a real craft it's reasonable to assume that it uses the WS-10a. I translated the Chinese site in google and the description of the plane is similar to what Jane's Defence called the "Super-10."
According the the Chinese website, the J-10c has several improvements:
-Better radar able the engage 6 target simultaneously
-Improved HUD
-Laser pod for ground attack
-Redesigned intake removing the struts (presumably for better efficiency and lower RCS).
-Large humped fuel tanks on the side (much like those installed on the F-16E) for increased range.
-Radar absorbant paint and "infrared suppression" technologies.
Here is the website:
Photo:
[qimg]http://bbs.news.sina.com.cn/forum/show_pic.php?u=http://x.bbs.sina.com.cn/forum/pic/5022d23a01054ben[/qimg]
Also, strategy page had a report saying "China is developing a fighter-bomber version of its F-16 clone, the J10. This new aircraft, a two seater, is the J10C. It was originally believed to be a naval version, but instead, it's an aircraft optimized for ground attack."
That also supports the possibility that it could be a real photo, or at least a real concept/model.