According to dafengcao tweet.
Both J-10 and J-20 fitted with domestic engines are now in production.
Not much evidence to it but the usual leaked information pass the censors using cartoons.
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Already posted yesterday... but allegedly the first better images of the WS-10 powered J-10C ... (Images via Icloo/PDF)
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(3rd Pic) Is that a chined nose section? There seems to be something like a straight chine running from the nose cone to the canard. Could also be an artifact from the angle of the sun.