Just because it is a generic looking "modern fighter" cockpit that isn't J-20, doesn't necessarily mean it's for J-35/XY.
We've seen multiple such cockpit renditions at Zhuhai and other tradeshows before, as just general technology displays.
It doesn't necessarily mean they are the actual representative cockpit of an actual aircraft.
So I wouldn't get too excited.
Besides it's not like the J-XY/35 cockpit will be anything that's too new.
We know it has a wide angle lightweight HUD, and will almost definitely have a wide area display, and maybe a smaller display beneath it as well. There's only so many ways to arrange it.
Chances are none of these displays are actually for J-XY/35 -- but at the same time, the J-XY/35 cockpit will likely look very similar to it.