New J-20 variants aren’t the same as a completely new design. We got one medium quality of image of 2021 where it was hard to tell whether it had sawtoothed nozzles and we didn’t get a confirmation of that for about a year. The Y-20 with WS-20 was flying for months, maybe up to a half year or more, before we got even one very low quality photo confirmation. We had at least two false alarms before then. The first pic of a carrier capable J-15, also low quality, was first leaked something like 4-5 years ago, and then we had a long gap. You’re clearly not paying attention.No. That's not true.
The photos of every new J-20 prototype, including the new two-seated no.2021 and WS-15 powered no. 2031 were detailed and high-res on the internet soon after they appeared on the runway. 2021 and 2031 just leaked several months ago.
The new no. 7810 Y-20 of the WS20-engine variant also debuted two or three months ago, and so was the Y-20U variant.
The carrier-borne J-15 was also leaked several months ago.