With 6th gen coming online in just a few years, is the j-20 upgrade going to take a back seat? How many j-20 do we think will be produced before production moves towards 6th gen completely
Not only will it take many years (upwards of a decade) until the next generation will enter service at all, leaving numbers aside for a bit, even then the J-20 will remain the backbone of the PLAAF.
There is also a point in asking if the "upgrade" isn't just simply finally getting the full-fat J-20 into service with all the features, engines and subsystems it was designed around. So the J-20 development and procurement is far from being done. In fact even after the CAC next gen will enter service I'm confident that the J-20 will receive further improvements down the line, perhaps even being able to benefit from tech trickling down from the next gen aircraft.
I would very much liken it (ironic given my previous comment on this thread I know) to how the Su-57M and F-35A Block IV are the actually desired versions that were drawn up at the start.
Either way, I don't see why the J-20 should receive any less attention now or in the foreseeable future. And it's not like that they couldn't comfortably fund both the J-20 evolution and the next aircraft in line.