Any chance of it being in actual development?
Unlikely right now, automation have eliminated most of the need for a 2nd person for fighter aircraft .
Back in the F14 and F4 days , the WISO job mainly was to operate the radar , then when F16 and F18 came along WISO job changed to EW and ground attack .
Both of these task now can be done with computers so that no 5th gen fighter so far has a 2 seat variant.
Now there is a 2 seat version in development for J20 but that WISO's job is to operate unmanned platform that will be integrated slowly in the coming decade, for naval aviation that prospect is still being examined.
The thing is that naval aviation and ground aviation have very different operation environment and needs , and the role of unmanned platform need to fill or can fill is yet to be clear. So we should not assume that just because J20 is playing around with a 2nd seat J35 need to.