It was originated to be signed in 2012, then it become 2013. Now it says 2014. The "Wolf is coming!" Theory cannot uses so many time. You still want to take the bait?
J-16 has just completed the final design appraisal and is ready for mass production. This will make the chances of PLAAF buying Su-35 even lower.
The Russian media appearently see signs of impending su-35 sale to china in much the same way a woman feeling her biological clock ticking might see signs that she is finally pregnant in every tea leaf and morning discomfort.