SinoSoldier
Colonel
The latest rumor is that new J-11B airframes are now retrofitted with an AESA radar.
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Another major rumor/speculation is that the PLAAF may purchase up to 96 (three squadrons' worth) Su-35SK aircraft, mainly due to the uncertainty as to when the J-11D will enter service. Analysts estimate that J-11D induction might not occur until 2018 at the very earliest and that the PLAAF needs to have the numbers gap filled quickly.
It's also mentioned that the J-11D would be delegated more to the air-to-air role, since the J-16 serves as an interdiction fighter, whereas the Su-35 would be more multi-role in its usage. It's also interesting to note that it's generally expected for the Su-35 to have an advantage in kinematics and for the J-11D to hold the edge in avionics.